ArticlePDF Available

Occupational Diseases Among Office Workers and Prevention Strategies

Authors:

Abstract

Objectiv e:In this review we discuss the health effects among office workers. Background: Even if office workers are not exposed hazardous or harmful environment frequently, some problems could be happened to the office workers. Although serious occupational diseases rarely occur to the office workers, it is important to consider occupational risk factors for the office worker because the portion of the office workers is relatively high in all industries. Method: We divided possible health effects for the office workers into three categories; musculoskeletal disorders, indoor environment, and cerebro-cardiovascular diseases. We reviewed related articles, textbooks, and statistical materials non-systematically and described risk factors, related illnesses, and prevention strategies on each category. Results: Office workers have various musculoskeletal disorders to be intervened. By medical treatment, improving working environment, and ergonomic intervention, office workers can be prevented from musculoskeletal injuries. Poor indoor environment can cause many building-related illnesses or sick building syndrome. Although the etiology of some problems by poor indoor environment is not clear, it helps to maintain adequate humidity, temperature, and clarity of indoor air. Cerebro-cardiovascular diseases are a rising issue because office workers in Korea tend to work for a lot of time. To prevent the diseases, it is needed to work for adequate time, lengthen activity level, and manage other medical risk factors for the diseases. Conclusion: There is no distinct occupational disease for office workers. However, there are some aspects to consider the health effects of office workers and it is important to prevent the possible health problems. Application: A strategy against occupational diseases among office workers can be established by reviewing this article.
J
ESK
J Ergon Soc Korea 2015; 34(2): 125-134
http://dx.doi.org/10.5143/JESK.2015.34.2.125
http://jesk.or.kr eISSN:2093-8462
Occupational Diseases Among Office Workers
and Prevention Strategies
Jongin Lee, Jung-Wan Koo
Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University of Korea,
Seoul, Korea, 137-701
Correspondin
g
Author
Jung-Wan Koo
Department of Occupational and
Environmental Medicine, College of
Medicine, The Catholic University of
Korea, Seoul, Korea, 137-701
Mobile : +82-10-9139-1402
Email : jwkoo@catholic.ac.kr
Received : February 05, 2015
Revised : March 22, 2015
A
ccepted : April 14, 2015
Objective:In this review we discuss the health effects among office workers.
Background: Even if office workers are not exposed hazardous or harmful environmen
t
frequently, some problems could be happened to the office workers. Although serious
occupational diseases rarely occur to the office workers, it is important to conside
r
occupational risk factors for the office worker because the portion of the office
workers is relatively high in all industries.
Method: We divided possible health effects for the office workers into three categories;
musculoskeletal disorders, indoor environment, and cerebro-cardiovascular diseases.
We reviewed related articles, textbooks, and statistical materials non-systematicall
y
and described risk factors, related illnesses, and prevention strategies on each category.
Results: Office workers have various musculoskeletal disorders to be intervened. B
y
medical treatment, improving working environment, and ergonomic intervention, office
workers can be prevented from musculoskeletal injuries. Poor indoor environment
can cause many building-related illnesses or sick building syndrome. Although the
etiology of some problems by poor indoor environment is not clear, it helps to
maintain adequate humidity, temperature, and clarity of indoor air. Cerebro-
cardiovascular diseases are a rising issue because office workers in Korea tend to
work for a lot of time. To prevent the diseases, it is needed to work for adequate
time, lengthen activity level, and manage other medical risk factors for the diseases.
Conclusion: There is no distinct occupational disease for office workers. However,
there are some aspects to consider the health effects of office workers and it is
important to prevent the possible health problems.
Application: A strategy against occupational diseases among office workers can
be established by reviewing this article.
Keywords: Office workers, Musculoskeletal disorders, Indoor air pollution, Cerebro-
cardiovascular diseases
Copyright@2015 by Ergonomics Society
of Korea. All right reserved.
cc
This is an open-access article distributed
under the terms of the Creative Commons
ttribution Non-Commercial License (http://
creativecommons.org/licenses/by-nc/3.0/), which
permits unrestricted non-commercial use,
distribution, and reproduction in any medium,
provided the original work is properly cited.
1. Introduction
Office workers exist everywhere in modern societies. They are found in ever
y
industry, especially office workers are exclusively employed in some fields of industr
y
including insurance and finance. On the other hands, even though industries emplo
y
manual workers rather than office workers such as manufacturing, construction, and
transportation, they also employ clerks working in office (Mohr and Shalat, 2005).
126 Jongin Lee, et al. J Ergon Soc Korea
Journal of the Ergonomics Society of Korea
The group "clerical support workers" is listed as a major group in the International Standard Classification of Occupations
(ISCO-08). It is subdivided into "general and keyboard clerks", "customer services clerks", "numerical and material recording clerks",
and "other clerical support workers" such as librarian, mail sorters, coders, personal clerks and so on (ILO, 2007). The group "office
worker" is defined as a major group in the Korean Standard Classification of Occupations (KSCO), but other groups as "managers",
"professions and related workers", and "military" are expected to have amounts of workers in office.
More than one fourth of working population is expected to be working as office workers nowadays in Korea (MOEL, 2014b).
And industrial accidents have been occurred to office workers and a few of them have been compensated. Annual number of
the compensated industrial accident cases among office workers in Korea was around five hundred per year. Most of them
(about 90%) were accidental, whereas cases of occupational disease also exist. Death rate is estimated to five to seven cases
annually (Jeong, 2012).
Most of the compensated occupational disease was musculoskeletal disease. The second one was cerebro-cardiovascular disease,
and the others were also compensated. Because the portion of compensated occupational disease is relatively small compared
to the other occupational categories, the office workers had not received much attention from health professions. And it is true
that the office workers are not exposed to occupational hazards from physical, chemical, or biological aspects not so much. But
regarding the number of current office workers is vast; we should focus on the health problems of the office workers.
The working conditions of office workers have been changed for tens of years so much; most of them became to use computer
while sitting statically, to work in massive buildings with air conditioning and refrigerating equipment (Mohr and Shalat, 2005).
The change of economic situation is enforcing more office workers to work longer hours; the problems of sudden cerebro-
cardiovascular diseases from excessive work are rising. So we will discuss occupational diseases among office workers on some
categories; musculoskeletal diseases, cerebro-cardiovascular diseases, and diseases from the office environment. The occupational
stress among office workers would be one of the main issues, but we will not deal with it because it will be discussed elsewhere
on the same journal.
2. Musculoskeletal Disorders
Musculoskeletal disorders are occurred more commonly than any other occupational diseases or work-related diseases (MOEL,
2014a and Leroyer et al., 2006). It is well known that the musculoskeletal disorders among the office workers are affected by
using electronic devices statically, especially using desktop computers. The posture using mouse or keyboard, the position of
visual display devices, and repetitive work are the ergonomic issues we should consider. The most common affected sites were
shoulders (Seo, 2007), back (Lee et al., 2007), or neck (Sim et al., 2009) to Korean office workers.
2.1 Risk factors
Feuerstein et al. (1997) suggested a model that excessive work demands, psychosocial work stressors and behavioral/physiological
responses in computerized work environment influence each other simultaneously. These factors affect increasing risk of upper
body musculoskeletal symptoms. Using VDTs for long duration, a very crowded workplace, or stressful work are known as risk
factors for musculoskeletal symptoms (Marcus and Gerr, 1996).
First of all, long duration of computer use is a major risk factor of musculoskeletal symptoms. Palmer et al. (2001) reported that
use of keyboard more than four hours as an important risk factor for neck and upper limb pain. The most affected sites were
shoulders, wrists and hands. But the relatedness was lower in elbows. In another study, the physical symptoms including headache,
eyestrain, arthralgia, stiff shoulders, low back pain, and general fatigue increase with duration of daily VDTs use without threshold
30 Apr, 2015; 34(2): Occupational Diseases Among Office Workers and Prevention Strategies 127
http://jesk.or.kr
(Nakazawa et al., 2002). Longer duration of computer use was related to more prevalent hand-wrist symptoms (Jensen, 2003
and Lassen et al., 2004) and forearm pain (Kryger et al., 2003). A systematic review summarized the dose-response relationship
between duration of computer use and musculoskeletal symptoms (IJmker et al., 2007). But although many journals report that
use of computer is related to wrist symptoms, the relation between use of computer and carpal tunnel syndrome was not clear
(Andersen et al., 2003).
Posture is another important risk factor for musculoskeletal symptoms. Awkward postures during use of computer are thought
to be related to the mismatches between the worker and the workstation that can lead musculoskeletal symptoms. Correlations
were observed that larger discrepancies in keyboard heights were associated with greater shoulder postures and smaller elbow
and wrist postures that would cause pains on related sites (Baker and Moehling, 2013). A similar report also described that cervical
symptoms were also related to too-high keyboard's position (Kanchanomai et al., 2012). Sustained position during computer work
can change the scapular position in the stretched upper trapezius. The positional changes are observed before and after computer
keyboard work statistically significantly (Park and Yoo, 2013).
Psychosocial factors also affect musculoskeletal symptoms. Bruno Garza et al. (2013) reported that the interaction of reward and
over-commitment can affect upper extremity muscle activity and postures during computer use in the real environment. And they
also commented that the interaction would explain the pathway between workplace psychosocial factors and musculoskeletal
symptoms. A previous research also reported that psychosocial work stress factors measured by Job Content Instrument model
were related to high prevalence of musculoskeletal symptoms (Faucett and Rempel, 1994).
2.2 Prevention strategy
It is important for the management of newly onset musculoskeletal pains to make an accurate diagnosis. Physical therapy, use of
analgesics, and trigger point injection could be considered as treatment options for musculoskeletal symptoms. But most of the
musculoskeletal symptoms among office worker go to chronic stage; it is more important to have an appropriate prevention
strategy.
It is known that long duration of work is related to musculoskeletal symptoms by many researches above; an appropriate strategy
should include limitation of working hours and offering appropriate resting hours to office workers. Workers with regular
resting time tended to have little prevalence of musculoskeletal symptoms on most of body parts (Yun et al., 2001). Jensen (2003)
recommended limiting computer use to less than three-fourths of the work time would help to prevent hand-wrist symptoms.
Because awkward postures that may be sustained with distorted muscle status are caused by ergonomically inappropriate
environment, ergonomic interventions are needed to prevent musculoskeletal symptoms. Esmaeilzadeh et al. (2014) conducted
a randomized controlled trial to show the effectiveness of a multicomponent ergonomic intervention program. The research
revealed that body posture and workstation layout improved over six months in the intervention group. The intervention included
a comprehensive ergonomic training, an ergonomic training brochure, and workplace visits with workstation adjustments. A
systematic review compromised the evidences of workplace modulations; the use of arm support with alternative mouse reduced
the incidence of upper limb, neck and shoulder pains. But there is no evidence of using an alternative mouse alone or an arm
support alone (Hoe et al., 2012). Therefore, a multifactorial intervention rather than a single modification is respected to have
effects on improvements of musculoskeletal symptoms among office workers.
Self-exercise is a good method to prevent musculoskeletal symptoms. Exercise programs including stretching and joint mobilization
exercises helped to reduce call-center operators' musculoskeletal discomforts and fatigue (Lacaze et al., 2010). Besides the
stretching exercise, both strength and endurance training were effective for women with chronic neck pain (Ylinen et al., 2003).
128 Jongin Lee, et al. J Ergon Soc Korea
Journal of the Ergonomics Society of Korea
3. Indoor Environment
Office workers are working in indoor environment generally by which a lot of illnesses could be caused. The indoor air pollution
has concerned from 1980's (Spengler and Sexton, 1983), and it is remaining one of the attractive issues for public health now.
It is well known that there are differences of various pollutants between the indoor and the outdoor environment (Lee et al.,
2001). And the difference could be greater if the indoor air is not able to be emitted due to air conditioning devices.
3.1 Sick building syndrome
Sick building syndrome is defined as a syndrome combining non-specific symptoms such as headache, fatigue, rash, and irritation
(Redlich et al., 1997). The exact etiology is not known, therefore the incidence is elusive. It is suggested that there are various
contributing factors; building factors, host factors, and work factors. Numerous indoor pollutants are frequently reported as trigger
factors for sick building syndrome. Building factors include formaldehyde (Glas et al., 2014), airborne molds, bacteria (Sahlberg
et al., 2013), dust (Zhang et al., 2011), and so on. Besides, personal and psychosocial factors can also aggregate or trigger sick
building syndrome (Runeson et al., 2006). Factors such as history of immunologic diseases (atopy or asthma), gender (female), job
stress, job satisfaction, speed of work may be contributing factors for sick building syndrome. These factors could be classified
into host factors or work factors.
3.2 Building-related illnesses
Building-related illnesses are illnesses or diseases that have specific causes and are able to be diagnosed by physicians objectively.
The examples are hypersensitivity pneumonitis, asthma, legionnaire's disease, chemical intoxication, and so on. Unlike sick building
syndrome, the building-related illnesses are often clinically serious.
3.3 Prevention
Although the etiology of sick building syndrome is not specific and predicting the specific cause for a building-related illness is
hard, some strategies could be applied to prevent problems from indoor environments. Wet, humid, and damp environments
are thought as the main cause for building-related illnesses (Park and Cox-Ganser, 2011). So, remediating water damage is an
important strategy against the dampness. Volatile organic compounds and formaldehyde are the main cause for sick building
syndrome. The concentration of these chemicals is relatively high from new buildings or furniture. Nowadays strategies such as
baking-out and biological treatment are suggested to reduce the chemicals (Lu et al., 2010).
4. Cerebro-Cardiovascular Diseases
There were sudden death cases to the workers with overwork, which were a social problem in Japan so the term 'karoshi'
became popular both socially and academically. Most of the causes of the 'karoshi' are considered cerebrovascular diseases
such as stroke and cerebral hemorrhage, or cardiovascular diseases such as myocardial infarction, arrhythmias and anginas. The
cerebro-cardiovascular diseases have some risk factors common in office workers we should consider.
4.1 Long working hours
The working hours of the office workers are long in general. Although it had not been revealed that the actual working hours
of the office workers, some studies reported that the working hours of the office workers were quite long (Cho, 2012). The office
workers had to frequently exceed the settled working hours for many reasons; work in urgency, manpower shortage, rigid
30 Apr, 2015; 34(2): Occupational Diseases Among Office Workers and Prevention Strategies 129
http://jesk.or.kr
atmosphere of office, work of difficulty, and so on.
Long working hours are associated with the risk of cerebro-cardiovascular diseases. A meta-analysis proved that the effect of long
working hours was associated with the risk of cardiovascular disease by analyzing previous eleven studies (Kang et al., 2012).
The long working hours had an effect to blood pressure. Those who did overtime work showed higher 24-hour ambulatory blood
pressure than who did not (Hayashi et al., 1996). Furthermore, obesity is common to workers with long working hours (Jang et
al., 2014); this can act as one pathway to the increase of cerebro-cardiovascular diseases. Another pathway we should consider
is sleep disturbances; the workers with long working hours had risks for the development of shortened sleeping hours and
difficulty falling asleep (Virtanen et al., 2009).
4.2 Sedentary work
Physical fit is an important factor that is preventive for cerebro-cardiovascular diseases. Men with low physical fitness showed
increased risk for ischemic heart disease mortality (Holtermann et al., 2010). This effect was important especially for the workers
with long working hours.
Like long working hours, sedentary work is a risk factor of obesity (Choi et al., 2010). Because the energy expenditure is decreased
in worker with low physical activity, the energy can be accumulated in body.
4.3 Psychosocial aspects
Psychological stressors may also induce cerebro-cardiovascular diseases. A current review from Australia suggests that perceived
chronic job strain and shift work can be associated with an increase of developing coronary heart disease (Glozier et al., 2013). But
the aspects regarded in job stress models such as job insecurity, job satisfaction, working hours, or effort-reward imbalance (ERI)
were not conclusive to cause coronary heart disease. The preventive occupational factors against myocardial infarction include
certain responsibility, social interaction, reasonable job demands, appropriate external resources, and so on (Sihm et al., 1991).
Stress itself can be act as a risk factor of obesity that is a main risk factor of cerebro-cardiovascular diseases. Björntorp (2001)
suggested a model of altered activity of autonomic nervous system, endocrine system, and circadian system in relation to lipid
metabolisms.
4.4 Prevention strategy
Although sedentary work is a risk factor, a new concept is rising recently to separate the physical activity into occupational physical
activity and leisure time physical activity. Leisure time physical activity can reduce the risk of coronary heart disease and the benefit
was best for the workers with sedentary work (Clays et al., 2013). The similar effect was observed in all-cause mortality rather
than coronary heart disease (Clays et al., 2014). Much portion of cerebro-cardiovascular diseases is related to metabolic syndrome.
Because office workers tend to have low activity level, it is important to promote them to exercise and not to intake too much
calories to prevent cerebro-cardiovascular diseases.
5. Conclusion
There is no typical occupational disease for the office workers because they are not exposed hazardous environment often. But
even though the office environment is relatively safe, some problems or illnesses are caused to the office workers. We discussed
130 Jongin Lee, et al. J Ergon Soc Korea
Journal of the Ergonomics Society of Korea
some problems that can be happened to the office workers. Even if the impacts are somewhat ambiguous, the impact of those
could be remarkable regarding the number of the office workers is huge. In those aspects, health effects to the office workers
should be treated more in the field of occupational and environmental medicine.
References
Andersen, J.H., Thomsen J.F., Overgaard, E., Lassen, C.F., Brandt, L.P., Vilstrup, I., Kryger, A.I. and Mikkelsen, S., Computer use and
carpal tunnel syndrome: a 1-year follow-up study,
Journal of American Medical Association
, 289(22), 2963-2969, 2003. doi:
10.1001/jama.289.22.2963, 2003.
Baker, N.A. and Moehling, S., The relationship between musculoskeletal symptoms, postures and the fit between workers'
anthropometrics and their computer workstation configuration,
Work
, 46(1), 3-10, 2013. doi: 10.3233/wor-2012-1480.
Bj
ö
rntorp, P., Do stress reactions cause abdominal obesity and comorbidities?,
Obesity reviews
, 2(2), 73-86, 2001.
Bruno Garza, J.L., Eijckelhof, B.H., Huysmans, M.A., Catalano, P.J., Katz, J.N., Johnson, P.W., van Dieen, J.H., van der Beek, A.J. and
Dennerlein, J.T., The effect of over-commitment and reward on trapezius muscle activity and shoulder, head, neck, and torso
postures during computer use in the field,
American Journal of Industrial Medicine
, 56(10), 1190-1200, 2013. doi: 10.1002/
ajim.22192.
Cho, S., The actual condition of working hours among public clerical workers and improvement direction,
Labor Review
, 88, 74-
84, 2012.
Choi, B., Schnall, P.L., Yang, H., Dobson, M., Landsbergis, P., Israel, L., Karasek, R. and Baker, D., Sedentary work, low physical job
demand, and obesity in US workers,
American Journal of Industrial Medicine
, 53(11), 1088-1101, 2010. doi: 10.1002/ajim.20886.
Clays, E., De Bacquer, D., Janssens, H., De Clercq, B., Casini, A., Braeckman, L., Kittel, F. De Backer, G. and Holtermann, A., The
association between leisure time physical activity and coronary heart disease among men with different physical work demands:
a prospective cohort study,
European Journal of Epidemiology
, 28(3), 241-247, 2013. doi: 10.1007/s10654-013-9764-4.
Clays, E., Lidegaard, M., De Bacquer, D., Van Herck, K., De Backer, G., Kittel, F., de Smet, P. and Holtermann, A., The combined
relationship of occupational and leisure-time physical activity with all-cause mortality among men, accounting for physical fitness,
American Journal of Epidemiology
, 179(5), 559-566, 2014. doi: 10.1093/aje/kwt294.
Esmaeilzadeh, S., Ozcan, E. and Capan, N., Effects of ergonomic intervention on work-related upper extremity musculoskeletal
disorders among computer workers: a randomized controlled trial,
International Archives of Occupationaland Environmental
Health
, 87(1), 73-83, 2014. doi: 10.1007/s00420-012-0838-5.
Faucett, J. and Rempel, D., VDT-related musculoskeletal symptoms: interactions between work posture and psychosocial work
factors,
American Journal of Industrial Medicine
, 26(5), 597-612, 1994.
Feuerstein, M., Armstrong, T., Hickey, P. and Lincoln, A., Computer keyboard force and upper extremity symptoms,
Journal of
Occupationaland Environmental Medicine
, 39(12), 1144-1153, 1997.
Glas, B., Stenberg, B., Stenlund, H. and Sunesson, A.L., Exposure to formaldehyde, nitrogen dioxide, ozone, and terpenes among
30 Apr, 2015; 34(2): Occupational Diseases Among Office Workers and Prevention Strategies 131
http://jesk.or.kr
office workers and associations with reported symptoms,
International Archives of Occupationaland Environmental Health
, on-
line only, 2014. doi: 10.1007/s00420-014-0985-y.
Glozier, N., Tofler, G.H., Colquhoun, D.M., Bunker, S.J., Clarke, D.M., Hare, D.L., Hickie, I.B., Tatoulis, J., Thompson, D.R., Wilson, A. and
Branagan, M.G., Psychosocial risk factors for coronary heart disease,
The Medical journal of Australia
, 199(3), 179-180, 2013.
Hayashi, T., Kobayashi, Y., Yamaoka, K. and Yano, E., Effect of overtime work on 24-hour ambulatory blood pressure,
Journal of
Occupationaland Environmental Medicine
, 38(10), 1007-1011, 1996.
Hoe, V.C., Urquhart, D.M., Kelsall, H.L. and Sim, M.R., Ergonomic design and training for preventing work-related musculoskeletal
disorders of the upper limb and neck in adults,
Cochrane Database Systematic Review
, 8, Cd00857, 2012. doi: 10.1002/
14651858.CD008570.pub2.
Holtermann, A., Mortensen, O.S., Burr, H., Sogaard, K., Gyntelberg, F. and Suadicani, P., Long work hours and physical fitness: 30-
year risk of ischaemic heart disease and all-cause mortality among middle-aged Caucasian men,
Heart
, 96(20), 1638-1644,
2010. doi: 10.1136/hrt.2010.197145.
IJmker, S., Huysmans, M.A., Blatter, B.M., van der Beek, A.J., van Mechelen, W. and Bongers, P.M., Should office workers spend
fewer hours at their computer? A systematic review of the literature,
Occupational and Environmental Medicine
, 64(4), 211-222,
2007. doi: 10.1136/oem.2006.026468.
ILO,
International Standard Classification of Occupations, 2008
, 2007.
Jang, T., Kim, H., Lee, H., Myong, J. and Koo, J., Long work hours and obesity in Korean adult workers,
Journal of Occupational
Health
, 55(5), 359-366, 2014.
Jensen, C., Development of neck and hand-wrist symptoms in relation to duration of computer use at work,
Scandinavian Journal
of Work and Environmental Health
, 29(3), 197-205, 2003.
Jeong, H.,
Guideline for occupational health - office workers
, Korea Occupational Safety and Health Agency, Incheon, 2012.
Kanchanomai, S., Janwantanakul, P., Pensri, P. and Jiamjarasrangsi, W., Prevalence of and factors associated with musculoskeletal
symptoms in the spine attributed to computer use in undergraduate students,
Work
, 43(4), 497-506, 2012. doi: 10.3233/wor-
2012-1387.
Kang, M., Park, H., Seo, J., Kim, D., Lim, Y., Lim, S., Cho, S. and Hong, Y., Long working hours and cardiovascular disease: a meta-
analysis of epidemiologic studies,
Journal of Occupational and Environmental Medicine
, 54(5), 532-537, 2012. doi: 10.1097/
JOM.0b013e31824fe192.
Kryger, A.I., Andersen, J.H., Lassen, C.F., Brandt, L.P., Vilstrup, I., Overgaard, E., Thomsen, J.F. and Mikkelsen, S., Does computer use
pose an occupational hazard for forearm pain; from the NUDATA study,
Occupational and Environmental Medicine
, 60(11), e14,
2003.
Lacaze, D.H., Sacco Ide, C., Rocha, L.E., Pereira, C.A. and Casarotto, R.A., Stretching and joint mobilization exercises reduce call-
center operators' musculoskeletal discomfort and fatigue,
Clinics (Sao Paulo)
, 65(7), 657-662, 2010. doi: 10.1590/s1807-
132 Jongin Lee, et al. J Ergon Soc Korea
Journal of the Ergonomics Society of Korea
59322010000700003.
Lassen, C.F., Mikkelsen, S., Kryger, A.I., Brandt, L.P., Overgaard, E., Thomsen, J.F., Vilstrup, I. and Andersen, J.H., Elbow and
wrist/hand symptoms among 6,943 computer operators: a 1-year follow-up study (the NUDATA study),
American Journal of
Industrial Medicine
, 46(5), 521-533, 2004. doi: 10.1002/ajim.20081.
Lee, K., Han, S., Ahn, Y., Hwang, J. and Kim, J., Related factors on musculoskeletal symptoms in selected Korean female office and
blue-collar workers,
Journal of Korean Society of Occupational and Environmental Hygienists
, 17(4), 289-299, 2007.
Lee, S., Li, W. and Chan, L., Indoor air quality at restaurants with different styles of cooking in metropolitan Hong Kong,
The
Science of the total environment
, 279, 181-193, 2001.
Leroyer, A., Edme, J.L., Vaxevanoglou, X., Buisset, C., Laurent, P., Desobry, P. and Frimat, P., Neck, shoulder, and hand and wrist pain
among administrative employees: relation to work-time organization and psychosocial factors at work,
Journal of Occupational
and Environmental Medicine
, 48(3), 326-333, 2006. doi: 10.1097/01.jom.0000196058.94482.99.
Lu, Y., Liu, J., Lu, B., Jiang, A. and Wan, C., Study on the removal of indoor VOCs using biotechnology,
Journal of hazardous
materials
, 182, 204-209, 2010. doi: 10.1016/j.jhazmat.2010.06.016.
Marcus, M. and Gerr, F., Upper extremity musculoskeletal symptoms among female office workers: associations with video display
terminal use and occupational psychosocial stressors,
American Journal of Industrial Medicine
, 29(2), 161-170, 1996. doi: 10.1002/
(sici)1097-0274(199602)29:2<161::aid-ajim6>3.0.co;2-v.
MOEL,
Industrial accident statistics
, The ministry of employment and labor, Sejong, 2014.
MOEL,
The investigation of workforce by occupational category
, The ministry of employment and labor, Sejong, 2014.
Mohr, S.N. and Shalat, S.L., Office and service workers, In L. Rosenstock(Ed),
Textbook of clinical occupational and environmental
medicine
2nd edition
, Elsevier, Philadelphia, 227-232, 2005.
Nakazawa, T., Okubo, Y., Suwazono, Y., Kobayashi, E., Komine, S., Kato, N. and Nogawa, K., Association between duration of daily
VDT use and subjective symptoms,
American Journal of Industrial Medicine
, 42(5), 421-426, 2002. doi: 10.1002/ajim.10133.
Palmer, K.T., Cooper, C., Walker-Bone, K., Syddall, H. and Coggon, D., Use of keyboards and symptoms in the neck and arm:
evidence from a national survey,
Occupational Medicine (London)
, 51(6), 392-395, 2001.
Park, J. and Cox-Ganser, J.M., Mold exposure and respiratory health in damp indoor environments,
Frontiers in bioscience (Elite
edition)
, 3, 757-771, 2011.
Park, S. and Yoo, W., Effect of sustained typing work on changes in scapular position, pressure pain sensitivity and upper trapezius
activity,
Journal of Occupational Health
, 55(3), 167-172, 2013.
Redlich, C.A., Sparer, J. and Cullen, M.R., Sick-building syndrome,
The Lancet
, 349(9057), 1013-1016, 1997. doi: http://dx.doi.org/
10.1016/S0140-6736(96)07220-0.
30 Apr, 2015; 34(2): Occupational Diseases Among Office Workers and Prevention Strategies 133
http://jesk.or.kr
Runeson, R., Wahlstedt, K., Wieslander, G. and Norback, D., Personal and psychosocial factors and symptoms compatible with
sick building syndrome in the Swedish workforce,
Indoor Air
, 16 (6), 445-453, 2006. doi: 10.1111/j.1600-0668.2006.00438.x.
Sahlberg, B., Gunnbjornsdottir, M., Soon, A., Jogi, R., Gislason, T., Wieslander, G., Janson, C. and Norback, D., Airborne molds and
bacteria, microbial volatile organic compounds (MVOC), plasticizers and formaldehyde in dwellings in three North European
cities in relation to sick building syndrome (SBS),
The Science of the total environment
, 444, 433-440, 2013. doi: 10.1016/
j.scitotenv.2012.10.114.
Seo, M., The Rate of Occurrence and Related Factors on Shoulder-Arm-Neck Syndrome of Officers,
Chonnam National University
Graduate School
, Kwangju, 2007.
Sihm, I., Dehlholm, G., Hansen, E.S., Gerdes, L.U. and Faergeman, O., The psychosocial work environment of younger men surviving
acute myocardial infarction,
European heart journal
, 12(2), 203-209, 1991.
Sim, M., Son, I. and Hong, S., The Degree of Musculoskeletal Discomfort of Officers,
Journal of Korea Contents Association
, 9(9),
249-258, 2009.
Spengler, J.D. and Sexton, K., Indoor air pollution: a public health perspective,
Science
, 221 (4605), 9-17, 1983.
Virtanen, M., Ferrie, J.E., Gimeno, D., Vahtera, J., Elovainio, M., Singh-Manoux, A., Marmot, M.G. and Kivimaki, M., Long working
hours and sleep disturbances: the Whitehall II prospective cohort study,
Sleep
, 32(6), 737-745, 2009.
Ylinen, J., Takala, E.P., Nykanen, M., Hakkinen, A., Malkia, E., Pohjolainen, T., Karppi, S.L., Kautiainen, H. and Airaksinen, O., Active
neck muscle training in the treatment of chronic neck pain in women: a randomized controlled trial,
Journal of American
Medical Association
, 289(19), 2509-2516, 2003. doi: 10.1001/jama.289.19.2509.
Yun, M., Lee, Y., Eoh, H. and Lim, S., Results of a survey on the awareness and severity assessment of upper-limb work-related
musculoskeletal disorders among female bank tellers in Korea,
International Journal of Industrial Ergonomics,
27(5), 347-357,
2001. doi: http://dx.doi.org/10.1016/S0169-8141(00)00062-7.
Zhang, X., Zhao, Z., Nordquist, T., Larsson, L., Sebastian, A. and Norback D., A longitudinal study of sick building syndrome
among pupils in relation to microbial components in dust in schools in China,
The Science of the total environment
, 409(24),
5253-5259, 2011. doi: 10.1016/j.scitotenv.2011.08.059.
Author listings
Jongin Lee:
leejongin.md@gmail.com
Highest degree:
MD, The Catholic University of Korea
Position title:
Medical Resident, Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University
of Korea, Seoul, Korea
Areas of interest:
Occupational and Environmental Medicine
Jung-Wan Koo:
jwkoo@catholic.ac.kr
134 Jongin Lee, et al. J Ergon Soc Korea
Journal of the Ergonomics Society of Korea
Highest degree:
PhD, Department of Public Health, Graduate School of The Catholic University of Korea
Position title:
Professor, Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University of
Korea, Seoul, Korea
Areas of interest:
Musculoskeletal Disorder, Occupational and Environmental Medicine
... Signals hence relevant include the time of keyboard usage (causing strain), worker-workstationalignment (affecting posture) or time spent in one posture. [5] Considering the office is an indoor environment, environmental factors such as air pollution (i.e. mold and dust) matter as allergy suffers could be amongst workers. ...
... Derivable signals are thus steps taken or any kind of physical activity (walking, stretching, short workout). [5] ...
Article
Full-text available
Mobile sensor technology, such as wearables, has been growing and evolving in recent years. Despite this, HCI designers and companies, particularly in the fashion industry, have yet to improve on explicitly designing portable solutions; optimally so that they effectively support users in reflecting and raising awareness on issues, a challenge also relevant when designing sensor solutions for offices. As of now, HCI designs were found to focus on precision, accuracy of monitoring, and effectiveness of classification model training rather than on wearability, aesthetics and, comfort. A shift in design thinking is thus necessary to reach mass adoption: designing mobile sensor solutions so they can be integrated into conventional items, especially fashion products. By evaluating practical mobile solutions on their supportiveness of reflection and signal processing in the context of the office, this paper puts forward guidelines to help HCI designers conceptualize mobile solutions, specifically for the office environment.
... For example, posture problems from sitting or standing too long in a static position, vision difficulties from gazing at a computer screen for prolonged periods, and musculoskeletal disorders. [19][20][21] To reduce these problems and instill a more positive WSC so that the work conditions and environment are safe and healthy, the workers must have high knowledge, a positive attitude and good practices towards WSC. Therefore, a workplace health education intervention would be a reasonable effort in increasing KAP towards WSC among office workers in Nigeria. ...
Article
Full-text available
Introduction: Studies have shown that a workplace safety culture (WSC) is lacking among the general workforce in Nigeria. Poor WSC can adversely impact workers' health and high remedial costs for employers. To improve WSC, workers need to improve related knowledge, attitude, and practices (KAP) towards WSC through effective health interventional programs at the workplace. The main objective of this study is to develop, implement and evaluate the effectiveness of the Work Safety Culture Health Education Module (WSCHEM). The specific goals are to improve KAP related to office ergonomics towards WSC among public sector administrative workers in Abeokuta, Nigeria MATERIALS AND METHODS: The study was a two-armed, singleblinded cluster randomised controlled trial (CRCT) involving 247 public sector administrative workers from clusters of 20 ministries in Abeokuta, Southwestern Nigeria. The intervention group was given WSCHEM, whereas the waitlist group received a seminar on team building and leadership skills and received the WSCHEM after the intervention program ended. The evaluation was done three times using the first formal validated, self-administered Work Safety Culture Questionnaire (WSCQ) among the administrative workers: first at baseline, second at 1 month, and third at 3 months post-intervention. Result: The results showed no statistically significant differences between groups regarding the respondents' characteristics (socio-demographic and occupational/officerelated ergonomic factors) and the outcome variables KAP towards WSC at baseline. For practices towards WSC, both intervention (β 6.8, 95%CI 4.85, 8.72) and time (β 6.2, 95%CI 4.49, 7.94) significantly improved the respondents' practices towards WSC in the per-protocol analysis. In the secondary outcomes, both knowledge of WSC, intervention (β 3.5, 95%CI 2.8, 4.2) and time (β 3.4, 95%CI 2.7, 5.9); and attitudes towards WSC, intervention (β1.7, 95%CI 1.25, 2.23) and time (β 2.3, 95%CI 1.92, 2.76) significantly improved the respondents' level of knowledge and attitudes respectively towards WSC. Conclusion: The intervention, WSCHEM, was effective in improving the administrative workers' KAP towards WSC, as demonstrated by the significance between and within-group differences.
... Prolonging sitting or maintaining a static position for a long time can cause posture problems and visionrelated problems from looking into a computer screen for extended periods. In addition, musculoskeletal disorders, unhealthy eating habits, stress problems resulting from overwork, mental health issues caused by job insecurity, and harassment are some of the health effects or defects and accidents that can result from working in an office (12,13). ...
Article
Introduction: Workplace safety culture (WSC) is crucial in providing a safe working environment. Workers need to be reminded regularly of its importance, and therefore effectively, work safety intervention programs need to be identified to be used for this purpose. The main objective is to identify workplace intervention programs to improve WSC among office workers. The specific goals are to determine the types of intervention (knowledge-based, attitudinal, and practices-based interventions), the theories used, and the effectiveness. Methods: Databases such as ProQuest, CINAHL, Medline, and ScienceDirect were used to perform literature searches with the keywords [“safety culture training” OR “safety culture education” OR “safety culture promotion”] AND [“office workers” OR “civil servant” OR “white-collar workers” OR “administrative officers” OR “clerical officer”]. The inclusion criteria set for the search process included research articles, publication between January 1, 2015, and September 10, 2020, which were research articles within five years and eight months of publication to the time of data extraction of this study. Availability of full-text articles, articles published in English, and only articles among office workers. Results: This review includes seven articles and the techniques used for these studies were knowledge, attitude, and practices towards WSC. Conclusion: As the number and scope of intervention of studies on WSC seem scarce, the nature of jobs nowadays and in the future seems to be more office-based; consequently, more of these studies are recommended among office workers.
... In addition, musculoskeletal disorders, unhealthy eating habits, stress problems resulting from overwork, mental health issues caused by job insecurity, and harassment are some of the health effects or defects and accidents that can result from working in an office. [8][9] "WSC can be viewed as a component of corporate culture, which alludes to individual, job, and organizational characteristics that affect and influence health and safety". 10 "WSC refers to the enduring value, priority, and commitment placed on safety by every individual and every group at every level of the organization". ...
Article
Full-text available
INTRODUCTION: The Workplace Safety Culture Questionnaire (WSCQ) was developed to assess the level of knowledge, attitudes and practices on Workplace Safety Culture (WSC) among public sector office workers in Nigeria. The main objective of this study was to determine the validity and reliability of the new Workplace Safety Culture Questionnaire (WSCQ) using the Information Motivation and Behavior (IMB) model. MATERIALS AND METHODS: The WSCQ questionnaire was completed twice by the respondents themselves, with an interval of ten days between sessions, to assess the accuracy of the initial results with the retest. This study involved 44 participants. RESULTS: Cronbach's alpha showed significant item consistency for each construct in the second pilot study. The information construct (Cronbach's α=0.929 and minimum corrected item-total correlation (CITC)=0.399). The motivation construct (Cronbach's α=0.932 and minimum corrected item-total correlation (CITC)=0.450). The behavior construct (Cronbach's α=0.812 and minimum corrected item-total correlation (CITC)= 0.401). In test-retest reliability, Cohen's kappa coefficient for construct of information for all items was almost 70% between (kappa k=0.689-1000, p<0.001). The intraclass correlation coefficient (ICC) for the construct of motivation for all items is 90% between (ICC=0.810-1000, p><0.001) and (kappa k=0.944-1000, p><0.001) for the construct of behavior was 71% for all items. CONCLUSION: This study introduces the WSCQ using the IMB model among public sector office workers as the first official validation of the WSCQ.
... Prolonging sitting or maintaining a static position for a long time can cause posture problems and visionrelated problems from looking into a computer screen for extended periods. In addition, musculoskeletal disorders, unhealthy eating habits, stress problems resulting from overwork, mental health issues caused by job insecurity, and harassment are some of the health effects or defects and accidents that can result from working in an office (12,13). ...
Article
Full-text available
Introduction: Workplace safety culture (WSC) is crucial in providing a safe working environment. Workers need to be reminded regularly of its importance, and therefore effectively, work safety intervention programs need to be identified to be used for this purpose. The main objective is to identify workplace intervention programs to improve WSC among office workers. The specific goals are to determine the types of intervention (knowledge-based, atti-tudinal, and practices-based interventions), the theories used, and the effectiveness. Methods: Databases such as ProQuest, CINAHL, Medline, and ScienceDirect were used to perform literature searches with the keywords ["safety culture training" OR "safety culture education" OR "safety culture promotion"] AND ["office workers" OR "civil servant" OR "white-collar workers" OR "administrative officers" OR "clerical officer"]. The inclusion criteria set for the search process included research articles, publication between January 1, 2015, and September 10, 2020, which were research articles within five years and eight months of publication to the time of data extraction of this study. Availability of full-text articles, articles published in English, and only articles among office workers. Results: This review includes seven articles and the techniques used for these studies were knowledge, attitude, and practices towards WSC. Conclusion: As the number and scope of intervention of studies on WSC seem scarce, the nature of jobs nowadays and in the future seems to be more office-based; consequently, more of these studies are recommended among office workers.
Article
Full-text available
El presente trabajo de investigación enmarca la importancia de conocer y prevenir los diversos riesgos de trabajo que pueden presentarse en una oficina y pueden derivarse en afectaciones a corto, mediano o largo plazo en los colaboradores. La investigación se realizó en el Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado de Cd. Delicias Chihuahua, específicamente enfocado en el personal administrativo, se analizaron factores de riesgo físicos, (iluminación, ventilación, ergonomía del mobiliario y equipo) y mentales-emocionales (estrés, jornada laboral, clima organizacional). Para la evaluación utilizamos como instrumento de medición, un cuestionario de 18 items y 5 preguntas abiertas para poder conocer y sintetizar la información brindada por el personal administrativo. Al finalizar la investigación se pudo evidenciar que el índice de riesgos dentro de las instalaciones es bajo dado que las instalaciones son recientes y de primer nivel, el mobiliario y equipo es nuevo y ergonómico y la única y principal afectación a largo plazo se manifiesta en complicaciones visuales por el uso de dispositivos electrónicos.
Article
Occupational Applications The coronavirus disease pandemic has changed the setting of many jobs, forcing people to switch to remote work. In turn, telework is associated with an increased risk of musculoskeletal disorders, as it is difficult to ensure an ergonomically correct work environment at home. Complaints of headaches, neck pain, and dizziness are reported by both young and old people. One of the reasons for such complaints might be an incorrect head position and prolonged tension in the neck muscles that is directly correlated with a spatially misaligned computer monitor and peripherals. We examined biomechanical parameters of the sternocleidomastoid muscle and found that it is possible to reduce tension in this muscle by keeping the head in an appropriate angular range to minimize potential health risks.
Conference Paper
Full-text available
Social and economic sustainability has become a crucial issue in the corporate sector over recent decades, both in large and small- and medium-sized enterprises (SME). The shock caused by the global pandemic has prompted SME players to rethink their operations. It has motivated them to develop sustainable processes to ensure their long-term economic and competitive presence in the market. The aim of this article is to provide a literature review of operational areas that can be examined and developed from the scope of Corporate Social Responsibility (CSR), which is a concept relating to understanding a business being part of society. Another scope underlined is employee volunteerism as an essential part of CSR activities. However, restrictions due to the COVID-19 pandemic have rewritten enterprises’ willingness to help and ways of providing such help. This paper provides a preliminary study of how employee volunteerism might work in the extraordinary COVID-19 situation. This study is a review article, which has been written to bring together and summarise the results/conclusions from multiple original research articles/studies. The authors of this study aim to provide practitioners with an overview to help them adapt to today’s rapidly changing environment.
Conference Paper
Aligned with the three pillars of the sustainability model (social, economic and environmental aspects), the United Nations has declared 17 Sustainable Development Goals to promote sustainability development steps by all countries. These goals are for everyone; our environment requires active voluntary action from all of us. These sound like extremely important, crucial and urgent world-changing issues that will require cooperation among governments, international organisations and world leaders. It might seem impossible that the average person can make an effort or have any impact, especially in these extraordinary pandemic times. This study aims to discover subjects’ opinions and preferences on the SDG. Additionally, time and budget allocations are observed among the goals. The results provide a deeper insight into individual can-do attitudes. While voluntary and environment-friendly measures are also considered as core values. However, the question is whether economics or the environment will be underlined. This paper focuses on individual actions and beliefs. The aim of the research is to discover how and what people are ready to do for a better environment in the post-COVID era. Based on the results, an action plan can be stated that supports the achievement of as many of the SDGs as possible.
Conference Paper
An enterprise resource planning (ERP) solution is a system that combines business functions with the management and organization of data and information. Its purpose is to facilitate the flow of information between all business functions within an organization and to manage the organization’s connections with external stakeholders. Proper information management helps an organization to connect organizational units, which further encourages the process of communication and the immediate exchange of information between members of the organization, thus leading to improved organizational processes and better decision-making at all levels. It is important to be aware of the complexity of implementing an ERP solution. Without the support of top management, a proper business plan and vision, business process transformation, effective project management, user involvement, and education and training, organizations cannot reap the full benefits of such a complex system. For implementation to be successful, it is crucial to consider the critical success factors. Identifying these factors is important as it allows companies successfully implement an appropriate ERP solution. The purpose of this study is to discuss the implementation of ERP solutions in the manufacturing industry. The manufacturing industry has discovered the effectiveness of ERP, however, it also faces some challenges in its implementation.
Article
Full-text available
Purpose: To compare exposure to formaldehyde, nitrogen dioxide, ozone and terpenes among office workers with and without sick building syndrome and the odds ratio for exposure. Are there significant differences? Methods: In this cross-sectional study of office workers, we investigated the associations between exposure to formaldehyde, nitrogen dioxide, ozone, α-pinene, and D-limonene using a case-control analysis. Data on perceived general, mucosal, and skin symptoms were obtained by questionnaires. Personal exposure measurements of the compounds were performed among cases and controls, and the odds ratios for exposures to the substances, both singly and in combination, were investigated. Results: Exposures varied for formaldehyde between 0.23 and 45 µg/m(3), nitrogen dioxide between 0.26 and 110 µg/m(3), ozone between <16 and 165 µg/m(3), α-pinene between 0.2 and 170 µg/m(3), and D-limonene between 0.8 and 1,400 µg/m(3). No consistent differences in exposure odds ratios were found between cases and controls or for individual symptoms.
Article
Full-text available
The aim of this study was to assess the combined relationship of occupational physical activity and leisure-time physical activity with all-cause mortality among men, while accounting for physical fitness. The prospective Belgian Physical Fitness Study included 1,456 male workers aged 40-55 years who were free of coronary heart disease at baseline. Baseline data were collected through questionnaires and clinical examinations from 1976 to 1978. To estimate physical fitness, a submaximal graded exercise test was performed on a bicycle ergometer. Total mortality was registered during a mean follow-up period of 16.9 years. Main results were obtained through Cox proportional hazards regression analysis. A total of 145 deaths were registered during follow-up. After adjustment for confounders, a significantly increased mortality rate was observed in workers who had low levels of both physical activity types (hazard ratio = 2.07, 95% confidence interval: 1.03, 4.19) but also in workers combining high occupational physical activity and low leisure-time physical activity (hazard ratio = 2.04, 95% confidence interval: 1.07, 3.91); the latter finding was particularly pronounced among workers with a low physical fitness level. The present results confirm the existence of a complex interplay among different physical activity settings and fitness levels in predicting mortality.
Article
Full-text available
In 2003, the National Heart Foundation of Australia published a position statement on psychosocial risk factors and coronary heart disease (CHD). This consensus statement provides an updated review of the literature on psychosocial stressors, including chronic stressors (in particular, work stress), acute individual stressors and acute population stressors, to guide health professionals based on current evidence. It complements a separate updated statement on depression and CHD. Perceived chronic job strain and shift work are associated with a small absolute increased risk of developing CHD, but there is limited evidence regarding their effect on the prognosis of CHD. Evidence regarding a relationship between CHD and job (in)security, job satisfaction, working hours, effort-reward imbalance and job loss is inconclusive. Expert consensus is that workplace programs aimed at weight loss, exercise and other standard cardiovascular risk factors may have positive outcomes for these risk factors, but no evidence is available regarding the effect of such programs on the development of CHD. Social isolation after myocardial infarction (MI) is associated with an adverse prognosis. Expert consensus is that although measures to reduce social isolation are likely to produce positive psychosocial effects, it is unclear whether this would also improve CHD outcomes. Acute emotional stress may trigger MI or takotsubo ("stress") cardiomyopathy, but the absolute increase in transient risk from an individual stressor is low. Psychosocial stressors have an impact on CHD, but clinical significance and prevention require further study. Awareness of the potential for increased cardiovascular risk among populations exposed to natural disasters and other conditions of extreme stress may be useful for emergency services response planning. Wider public access to defibrillators should be available where large populations gather, such as sporting venues and airports, and as part of the response to natural and other disasters.
Article
Full-text available
In 2003, the National Heart Foundation of Australia published a position statement on psychosocial risk factors and coronary heart disease (CHD). This consensus statement provides an updated review of the literature on psychosocial stressors, including chronic stressors (in particular, work stress), acute individual stressors and acute population stressors, to guide health professionals based on current evidence. It complements a separate updated statement on depression and CHD. • Perceived chronic job strain and shift work are associated with a small absolute increased risk of developing CHD, but there is limited evidence regarding their effect on the prognosis of CHD. • Evidence regarding a relationship between CHD and job (in)security, job satisfaction, working hours, effort–reward imbalance and job loss is inconclusive. • Expert consensus is that workplace programs aimed at weight loss, exercise and other standard cardiovascular risk factors may have positive outcomes for these risk factors, but no evidence is available regarding the effect of such programs on the development of CHD. • Social isolation after myocardial infarction (MI) is associated with an adverse prognosis. Expert consensus is that although measures to reduce social isolation are likely to produce positive psychosocial effects, it is unclear whether this would also improve CHD outcomes. • Acute emotional stress may trigger MI or takotsubo (“stress”) cardiomyopathy, but the absolute increase in transient risk from an individual stressor is low. • Psychosocial stressors have an impact on CHD, but clinical significance and prevention require further study. • Awareness of the potential for increased cardiovascular risk among populations exposed to natural disasters and other conditions of extreme stress may be useful for emergency services response planning. • Wider public access to defibrillators should be available where large populations gather, such as sporting venues and airports, and as part of the response to natural and other disasters. https://www.mja.com.au/journal/2013/199/3/psychosocial-risk-factors-coronary-heart-disease
Article
Full-text available
Objectives: The present study was designed to identify the association between work hours and obesity in Korean adult manual and nonmanual workers, and to determine whether there is a gender difference in this association. Methods: The study was conducted using Korean National Health and Nutrition Examination Survey data collected between 2007 and 2010. Individuals aged below 25 or over 64 years, pregnant women, part-time workers, soldiers, housewives and students were excluded. The total number of individuals included in the analysis was 8,889 (5,241 male and 3,648 female subjects). The outcome variable was obesity, defined as body mass index ≥25 kg/m(2). Variables considered in the model were age, education, income, marital status, alcohol drinking, smoking, daily energy intake, physical activity, sleep hours per day, the type of job, work hours, and work schedule. Work hours were categorized as <40, 40-48 (reference), 49-60, and >60 hours per week. Results: In the multiple SURVEYLOGISTIC regression analyses, the adjusted odds ratio of obesity for long work hours (>60 hours per week) in male manual workers was 1.647 (95% confidence interval 1.262-2.151). Long work hours did not significantly increase the odds ratio for obesity in male nonmanual workers and female manual and nonmanual workers. Conclusions: More than 60 work hours per week increased the risk of obesity in Korean male manual workers. This result might be helpful in preventing obesity in Korean adult workers, especially male manual workers.
Article
Full-text available
Because of reported associations of psychosocial factors and computer related musculoskeletal symptoms, we investigated the effects of a workplace psychosocial factor, reward, in the presence of over-commitment, on trapezius muscle activity and shoulder, head, neck, and torso postures during computer use. We measured 120 office workers across four groups (lowest/highest reward/over-commitment), performing their own computer work at their own workstations over a 2-hr period. Median trapezius muscle activity (P = 0.04) and median neck flexion (P = 0.03) were largest for participants reporting simultaneously low reward and high over-commitment. No differences were observed for other muscle activities or postures. These data suggest that the interaction of reward and over-commitment can affect upper extremity muscle activity and postures during computer use in the real work environment. This finding aligns with the hypothesized biomechanical pathway connecting workplace psychosocial factors and musculoskeletal symptoms of the neck and shoulder. Am. J. Ind. Med. © 2013 Wiley Periodicals, Inc.
Article
The objective of this study was to examine the relationship between upper limb symptoms and keyboard use in a population survey. A questionnaire was mailed to 21 201 subjects aged 16–64 years, selected at random from the registers of 34 British general practices. Information was collected on occupation and on regular use of keyboards (for >4 h in an average working day), pain in the upper limbs and neck, numbness or tingling in the upper limbs, headaches, and feelings of tiredness or stress. Associations were explored by logistic regression, with the resultant odds ratios converted into prevalence ratios (PRs). Among 12 262 respondents, 4899 held non-manual occupations. These included 1871 regular users of keyboards (e.g. computer operators, data processors, clerks, administrators, secretaries and typists). Pain in the neck or upper limbs and sensory symptoms were common in the non-manual workers overall (with 1 week period prevalences of 30 and 15%, respectively), and were associated with older age, smoking, headaches and tiredness or stress. After adjustment for these factors, regular keyboard use was significantly associated with pain in the past week in the shoulders (PRs 1.2–1.4) and the wrists or hands (PR 1.4), but not with elbow pain or sensory symptoms over the same period, or with neck or upper limb pain that prevented normal activities in the past year. Disabling symptoms were somewhat less prevalent among symptomatic keyboard users than among other symptomatic workers. We conclude that use of keyboards was associated with discomfort at the shoulder and wrist or hand, but risk estimates were lower than generally reported in workplace surveys. Previous estimates of risk in the occupational setting may have been biased by shared expectations, concerns, or other aspects of illness behaviour.
Article
Aims To determine the occurrence of pain conditions and disorders in the forearm and to evaluate risk factors for forearm pain in a cohort of computer workers. Methods A total of 6943 participants with a wide range of computer use and work tasks were studied. At baseline and at one year follow up participants completed a questionnaire. Participants with relevant forearm symptoms were offered a clinical examination. Symptom cases and clinical cases were defined on the basis of self reported pain score and palpation tenderness in the muscles of the forearm. Results The seven days prevalence of moderate to severe forearm pain was 4.3%. Sixteen of 296 symptom cases met criteria for being a clinical forearm case, and 12 had signs of potential nerve entrapment. One year incidence of reported symptom cases was 1.3%; no subjects developed new signs of nerve entrapment. Increased risk of new forearm pain was associated with use of a mouse device for more than 30 hours per week, and with keyboard use more than 15 hours per week. High job demands and time pressure at baseline were risk factors for onset of forearm pain; women had a twofold increased risk of developing forearm pain. Self reported ergonomic workplace factors at baseline did not predict future forearm pain. Conclusion Intensive use of a mouse device, and to a lesser extent keyboard usage, were the main risk factors for forearm pain. The occurrence of clinical disorders was low, suggesting that computer use is not commonly associated with any severe occupational hazard to the forearm.
Article
The purpose of this study is to identify the factors influencing the musculoskeletal discomfort and the physical region related symptoms. The outcome of the study uses KOSHA Code H-30-2003 which defines possible symptoms into different categories. Symptom I, ll showing the highest occurrence rate in shoulder and neck regions and most of Symptom III, IV come from back region. Analysis of the factors influencing the musculoskeletal discomfort vary in different parts of the body. In the neck region, the discomfort related to rest and the computer keyboard. Gender affects the magnitude of pain in the shoulder region. Wrist pain is related to the chairs being used and back discomfort is influenced by shoulder exercise and the degree of rest taken. Physical fatigue due to work affects all the regions mentioned above. Conclusively, office workers are prone to the musculoskeletal discomfort due to their work environment. To alleviate this problem, the workers need to be educated with proper long-term musculoskeletal related health programs and exercise program containing various stretching methods. In addition, the effort to improve the variables in this study would help to reduce the rate of musculoskeletal discomfort.
Article
Recently, the adverse effects of long working hours on the cardiovascular systems of workers in Japan, including "Karoshi" (death from overwork), have been the focus of social concern. However, conventional methods of health checkups are often unable to detect the early signs of such adverse effects. To evaluate the influence of overtime work on the cardiovascular system, we compared 24-hour blood pressure measurements among several groups of male white-collar workers. As a result, for those with normal blood pressure and those with mild hypertension, the 24-hour average blood pressure of the overtime groups was higher than that of the control groups; for those who periodically did overtime work, the 24-hour average blood pressure and heart rate during the busy period increased. These results indicate that the burden on the cardiovascular system of white-collar workers increases with overtime work.