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An analysis of the uses and properties of the Obeya

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The term Obeya has become known as part of the Toyota Product Development System and the Lean Product Development strategy which has come out of that. Literature describes the Obeya as one of the tools of the TPDS, but rarely discusses what really makes an Obeya work, and what the critical aspects of it are. In the EU-sponsored project Linked Design, which develops methods for design in distributed work groups - often called collaborative design - a virtual Obeya has been identified as one of the subgoals. In order to specify such a solution, we need to examine thoroughly what Obeya is, how it is used, and what the critical factors determining its success are. This paper provides such an analysis.
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An analysis of the uses and properties of the
Obeya
Knut Aasland, Detlef Blankenburg
Norwegian University of Science and Technology, N-7491 Trondheim, Norway,
{knut.e.aasland,detlef.blankenburg}@ntnu.no
Abstract
The term Obeya has become known as part of the Toyota Product Development System and the Lean Product
Development strategy which has come out of that. Literature describes the Obeya as one of the tools of the TPDS,
but rarely discusses what really makes an Obeya work, and what the critical aspects of it are.
In the EU-sponsored project LinkedDesign, which develops methods for design in distributed work groups often
called collaborative design a virtual Obeya has been identified as one of the subgoals. In order to specify such a
solution, we need to examine thoroughly what Obeya is, how it is used, and what the critical factors determining its
success are. This paper provides such an analysis.
Keywords
Lean product development, Obeya, collaborative design
1 Introduction
1.1 The Obeya term
Obeya is a term used for a ”large room” connected to project work in industry. Its origin is in the
G21 project at Toyota in the 1990s, a project which led up to the first generation Prius [Morgan,
Liker 2006]. At the onset of this project, Takeshi Uchiyamada was appointed Chief Engineer for
the project. He felt that he lacked the necessary authority to make the optimal decisions, and
thought he could be overrun by experienced discipline leaders in a way that was not optimal for
the project as such. He therefore needed the support of the other discipline leaders whenever he
had a decisive discussion with one of them [Liker 2003].
In order to achieve this, he instituted the “large room” Obeya in Japanese as an arena for all
his discussions with the discipline leaders. In this room, the other discipline leaders would be
present, and documents and data would be available to all.
As the project progressed, the results were so good that the idea was taken up by the Toyota
organization, instituted at its new Thailand premises for the IMV project, cf. Figure 1, and after a
while made a standard part of the Toyota Product Development System [Osono et al 2008]. By
then, a number of standards for the Obeya had been found. The documentation, for instance
would be on A3 sheets on the wall, each sheet representing a problem, decision, idea or – more
precisely all necessary information, across disciplines. The A3 format represents a simplified
and condensed format for information communication. Thereby, all information would be brief
and concise, and all present in the room would have easy access to the necessary insight in the
cases.
So the original Obeya was a room for project management.
However, as time progressed and experience was gained, the room started to be used for more
than management. Typically, technical discussions between disciplines would take place in the
Obeya, and this meant that more information would have to be present. It therefore became
custom to post all important information in the room.
1.2 Objectives behind Obeya
What should the Obeya achieve? A levelling of management influence is obvious, but by today’s
standards, by no means enough.
As with all methods and techniques for product development, the two overall objectives are:
Efficiency of the development process, and
Quality of the resulting product (quality as in “having the right properties” [Mørup
1993])
In the case of Obeya, both objectives are considered crucial. In this paper, we will focus on the
first point and look into what efficiency in development is, and how the Obeya can contribute to
it. Among a number of factors promoting efficiency, the following are important:
1.2.1 Rapid decision-making
In a setting where all relevant people have access to the same information in a condensed format
and accessible to all, decisions are more easily made, and therefore take less time.
1.2.2 Reduction in rework and reconsiderations
This is where the potential for time saving is most obvious. Rework, in the form of iterations, is
an important part of all development work. This is natural and should be so, but must be kept at
as low a scale as possible. Hitting a dead end or an insurmountable obstacle often sets the project
back weeks and months. The costs of this can be considerable, but even more severe is the risk of
missing the product delivery date. It can possibly mean a missed launch window, and this can
have serious economic consequences, and even if it doesn’t, a delayed introduction will mean
lost sales.
Figure 1: The Obeya of the IMV project at Toyota Thailand (from [Osono et al 2008])
1.2.3 Reduction in unnecessary discussions
In development work, creativity, idea generation and discussions are core activities, and
therefore crucial. So discussions are a good thing. What isn’t, is discussions over and over about
things that have already been clarified or decided. That is pure waste of time and brainpower.
And the Obeya is a way to reduce such waste. When everybody have access to the same
information at the same time, and important discussions take place with participation of all
relevant people, then the discussions will tend to be done with and dealt with at the right time,
and not repeated with new people over and over again. It is believed that this also leads to better
decisions as a result of the broad involvement.
1.3 Requirements
In order to prepare for the development of a virtual Obeya, we need to find out what
requirements must be placed on an Obeya for it to work according to the objectives. This
analysis has not been done yet, but will take place after the analysis of the Obeya is finished.
2 Research approach
This is an introductory phase of a project leading up to a novel concept, the virtual Obeya. In this
introductory study, the main research approach is literature study.
3 Different rooms and perspectives of an Obeya
Figure 2: Different rooms related to the Obeya
In order to understand the Obeya and what makes it work, we have examined other types of such
big rooms, and will go through them. Our understanding of the Obeya is that it represents a
combination of many of these rooms, that is it includes the functionality of many (if not all) of
them. We can therefore regard these rooms as aspects of the Obeya, although they originated as
separate concepts. Figure 3.1 shows a collage of different types of cooperation rooms relevant to
the Obeya, which shows different functionality and different properties.
Virtual - Modern technology allows us to actively participate in the activities in each of the
rooms without being physical present. That means that activity, including active real time view,
is possible for participants at both the same place and/or different places at the same time.
Passive view, simply observing is also obvious in all rooms.
Visual - A major focus in all these rooms and all of our work is the focus on visual perception
(as part of visual communication), which means the ability to interpret information and
surroundings from the effects of “visible light reaching the eye” [From Wikipedia, the free
encyclopaedia]. By that we mean the use of pictures, graphs, colours, objects and what else
makes it possible to grasp complex relations of many different factors in a glimpse in a blink of
an eye. Even though reading is also based on visual perception, very people are able to read an
entire page in a glimpse (like Raymond Babbitt, the “rain man”) [From Wikipedia, the free
encyclopaedia].
The use of colours, graphics, and symbols provides clear and unambiguous information that can
be understood in a heartbeat. Visual management is based on visual perception, and is generally
regarded as a clear, simple and effective way to organize and present work. It can also be
perceived as fun, since visual elements bring colour and life into an otherwise boring office
environment. Another benefit of visual management - often overlooked - is that it can positively
influence the behaviour and attitude of team members, managers and stakeholders, for example,
by helping build transparency and trust.
“Information Radiator” is a popular term invented by Alistair Cockburn that is used to describe
any artefact that conveys project information and is publicly displayed in the workspace or
surroundings [Cockburn 2006]. Information radiators like “Task Boards” or “Big Visible Charts”
are very popular in the Agile world (the computer science equivalent of lean product
development). But there are also less obvious items like “lava lampsand stolen street lights as
project health indicators. [Perry 2007].
Over time the term “Obeya” has been used for many different views and perspectives regarding
the product development process. The following types of “Big Rooms” have been identified (cf.
Figure 2):
War Room
Work Room
Meeting Room
Discovery Room
Sharing Room
Workflow Room
Management Room
Those “Rooms” have different purposes and can be specified along different perspectives. In
Figure 2 and in the following chapters each room is described by using 5 perspectives:
Action and duration of action perspective - when and how long action takes place
Recordings perspective - how long recordings for passive viewing are taken
Problem and task perspective - in which way tasks and problems are treated
Participation of functions and people perspective - which functions and how many people
are present
Information / data perspective - how much information is available
3.1 War Room
The war room is the most extreme variant of an Obeya. A good description of it is given in
[Mark 2002]. In a war room allimportant functions are “always” present and able to monitor
the situation to make the necessary decisions and bring the orders out to those who can execute
them. Each of the core team members (typically less than 20) in the war room is normally
backed up by his team on the outside for support through hard work and information. In that way
tasks are identified, described, assigned and worked on in real-time. Problems are identified,
assigned and solved in real-time. Recordings are always taken.
3.2 Work room
Toyota has found that one of the best ways to create an open and flat environment is to have
everyone work together in a large room with no partitions. Individuals representing the different
functional groups on the production preparation team such as technology, production,
procurement, logistics, marketing, and accounting, were assembled into one large room to foster
open communication and teamwork. That is probably the most common room related to the
Obeya. In this room the work gets done. Tasks are identified, described and worked on.
Problems are identified and solved. Action takes place both at the same and/or different times in
long durations. Recordings are only partly taken with regard to the workersneed for "privacy”.
The need–to-be-there functions are represented in an effective team of about 10 people or less
with “allinformation / data available.
3.3 Meeting room
Engineers are not co-located. It is the engineering staff leaders (leaders of each functional group)
who meet with the chief engineer regularly. These engineering managers have desks in their
functional organizations and come to the meeting room regularly (often daily) for collaborative
work sessions (not traditional meetings).
One of the best ways to do this is to co-locate the team in an Obeya, the same way Toyota co-
locates its product team leadership, and uses it as a lean product development strategy room.
Sections of the walls can be assigned to each of the work stream teams for “information
radiators” like value stream maps, A3s, or other relevant information across teams. In addition
the room can be used as a regular meeting location and at the same time learn what the other
teams are working on. Because of the interdependency of most tasks in product development,
this “socialization” process among the teams is critical. The goal is to create an integrated
product-development value streamnot isolated work streams that lead to optimizing local
process at the expense of the greater process [Morgan & Liker 2006].
Action takes place at the same time and are always recorded. Tasks are described, assigned and
worked on. Problems get identified, assigned and solved. Functions, people, information and
data are present on a need-to-be-there basis.
3.4 Discovery room
A discovery room is an “experimentarium” or science centre, where technologies, techniques
and solutions can be tested and toyed with [Arth 1977]. Action takes place at the same and/or
different times and are partly recorded. Tasks are worked on and problems get solved. Functions
and people are present on a need-to-be-there basis with “all” information and data available.
3.5 Sharing room
To enhance communication and teamwork, information about the project is posted on the walls
of the sharing room, much like in "situation room", a process known as Mieruka (visualization)
in Japanese. Information about what was going on, the issues of the project at any given time,
and what the plan was next, are all up on the walls, not tucked away in someone's desk or even
worse in someone’s computer. In addition the sharing room will contain all the background
information and data in all the different representations like data and paper files, books, charts,
pictures, sound files and recordings, videos and so on and last but not least physical objects.
There one can find existing products, components and models, both own and from competitors.
In that way the sharing room is the largest room of them all because it contains all the
information, data and knowledge providing the basis for new product development.
The action sharing including both giving and receiving is going on at the same and/or
different times, usually in short durations. Because of the nature of the process, the information
always needs to be “recorded” because it needs to last. There is no activity related to tasks and
problems, you simply share all information and data with all functions and people.
3.6 Workflow room
“There is no tool or method in my repertoire that has had greater success, both from the
standpoint of impact on team performance and from the perspective of ease of implementation”
[Mascitelli 2011].
The workflow room is based on frequent stand-up meetings of short-duration creating a sense of
urgency, facilitating positive peer pressure to be productive, enabling synchronization of work
and allowing the rapid resolution of conflicts and issues. This kind of meetings is used by
different kinds of organizations living in a rapidly changing environment where it is vital that
team members frequently resynchronize their efforts, coordinate, communicate, and flexibly
adapt to current conditions. Examples are the police, hotels, casinos and of course sport teams
in rugby it is called the “scrum”.
First thing in the morning and the duration of maximum 15 minutes balances the sense of
urgency and the limit of people’s comfort. It gives answers about what the team has
accomplished since the last meeting, what has to be done before the next meeting and what
might prevent the team from doing it.
The stand-ups are supported by a task board with the mission of visually representing the work
that is being done by the team, a “living” entity that has to be manually maintained.
A good task board should be carefully designed with readability and usability in mind, and the
project methodology should actively rely on it. This implies that the use of the task board should
be standardized and form part of the process. If task boards (and other information radiators)
are not an integral part of the project methodology, maintaining them might be perceived as
overhead or duplication of work. This results in boards not being updated and becoming out of
sync with the work actually being done. An incomplete or stale task board is worthless. A task
board is a living entity and should be kept healthy. (Quoted from [Perry 2007]) (cf. Figure 3)
Nobody complains about having to use it, it supports and captures the stand-ups, people passing
by stop to look and understand it.
Most task boards are set up without giving too much thought to aesthetics and usability. They are
hastily made, using available materials and without putting much attention to detail. There are no
guidelines regarding the use of colours or materials, and no defined process for using the board.
All this makes for very low readability and poor usability in general. If you are standing two
meters from such a board, it looks sloppy and is rather illegible. There is no doubt that with some
effort, one can do better than that! [Allue 2009].
In the workflow room action necessarily takes place at the same time with a very short duration.
The task board itself is the recording item and everyone can look at it up to the next meeting
snapshots should be taken after each meeting. Here task and problems get identified and
assigned. The needto-be-there functions are represented in an effective team of about 10 people
or less with just the needto-be-there information / data available.
3.7 Management room
The management room, with Figure 4 as a typical example, is for information purpose only. The
sheer size of the board and the number of coloured magnets combined with the number and dress
code of the meeting participants strongly indicate that here no tasks or problems are worked on
or solved. One can get an overview of the state of the entire project in general with problems and
delays pin-pointed. It is an attempt to break down walls between departments, and upper and
lower management in big projects where un-involvement and potential breakdown in
communication can cause major problems. The purpose is to ensure that everyone, and
especially the leadership team, can get a snapshot of the performance by global metrics, specific
Key Performance Indicators (KPI’s) and project timing the core information / data for that
purpose. Action happens at the same time but gets recorded for viewing, both real time and later.
The duration is normally very short, no work is done but problems get pin pointed to all
functions and people.
Figure 3: A task board (from [Perry 2007])
Figure 4: A management room meeting at Scania (from Peter Palmér; LPPDE-NA 2011 Presentation)
4 Aspects of a Virtual Obeya
In previous work with implementing Obeyas in design and development departments of
industrial companies, the authors have recognized certain particular aspects that are crucial to
achieve the positive effects of an Obeya. As such industry internal improvements are usually
regarded as sensitive information by the companies, we have not published these observations,
and we have not found much published by others either. But some of the paramount aspects are
discussed in the Toyota literature, for instance [Morgan & Liker 2006].
4.1 Visual
The importance of the visual aspect is as strong in the virtual Obeya as in the physical Obeya and
that is valid for all the different rooms. The visual aspect has been discussed in the previous
chapter.
4.2 Physical
Product development is still a human activity that depends also on the physical interaction of the
team members with each other. So it is necessary to carry over the physical aspects of the Obeya
into the virtual world. One should only use virtual solutions when logistics or other issues cannot
be resolved in any other way. Even then, the basis should be a physical Obeya used by a physical
co-located sub-team.
4.3 Virtual
An early discussion on virtualization of Obeya-like rooms is given by Kirsh [Kirsh 1998].
The reality of most project teams is that developers may be spread out over several time zones,
and may also include outside contractors and key suppliers. Today many different tools can be
used to achieve different benefits of a physical Obeya also in the virtual world. Customized
virtual tools such as “Visio” look much like a physical wall-Gantt. A set of drag-and-drop
stencils are available for use by the team during their virtual stand-up meetings. Real-time
interaction is possible through on-line webcast applications. In this way, each team member can
interact and make their modifications (i.e., move, add, or remove sticky notes) in real time.
Other tools like “GoToMeeting” can help to facilitate a virtual stand-up meeting in a similar way
as a collocated one [GoToMeeting 2012]. Once the meeting is over, it is possible to print out a
physical copy of the board to post on the wall at all involved locations, or simply provide big
screens for the same purpose.
Although some virtual approaches come close to physical implementations, there is no substitute
for the personal interaction of team members. Cyberspace doesn’t change human nature.
Gathering a project team several times per week for face-to-face discussion and planning has
benefits at many levels, not the least of which is the building of team identity and emotional
commitment. As hard to define as they may be, a great team leader recognizes these intangibles,
and makes the most of them whenever possible. A virtual project board may be easy, but having
team members see each other face-to-face is the most powerful “visual” management tool there
is. [Mascitelli 2011]
5 Realization of a Virtual Obeya
The most crucial part in the realization of a virtual Obeya is the combination of the aspects of
visual, physical and virtual. There are few places where those aspects are discussed in
combination with each other. One of them is the “Physual Designing™ conceptual framework
that integrates physical arenas and virtual tools in a visual collaborative environment capable of
supporting collocated teams and individual contributors engaged in tight synchronous
collaboration. That framework is compatible with a wide range of available collaborative
technologies and is used to develop recommendations that are based on a fundamental
understanding of key dimensions that, when orchestrated, can contribute to improved
collaborative effectiveness and competitiveness. [Kristensen 2003].
Physual is a term that refers to a combination of physical, virtual and visual. Physual designing
supports collaborative effectiveness and efficiency in teams through a combination of a physical
arena, a virtual workspace and selected computer peripherals. The physual designing network is
a portal that enables shared access to all resources necessary to engage in collaboration in any
team, any time, from any place. The term physual has been coined by Kjetil Kristensen
[Kristensen et al 2004] to describe the virtual/physical continuum as shown in Figure 5.
A virtual Obeya needs to take those kinds of frameworks into consideration but is expected to
reach longer, but how far and in which direction? They only thing we know is that we need it.
Major findings in a survey among 43 oil and gas companies regarding collaborative work
environments (CEs) are as following [Kristensen 2008]:
CEs are mission critical.
Audio and video conferencing and data sharing are the most important functionalities
today, but many respondents find the applications difficult to use.
Current and anticipated use is higher than expected. More than 75% of users expect to
see more CEs in their corporations, and in excess of 30% work in CEs more than 6 hours
per week.
Integrated operations and related concepts are reaching a stage of maturity.
The major challenges often lie within the organizational structures.
Multi-purpose CEs are increasingly becoming popular.
Figure 5: The aspects of physual, as defined by Kristensen [Kristensen et al 2004], [Kristensen 2008]
(photos from [Kristensen 2008])
The failure rate of CEs is still too high.
6 Conclusions
The Obeya is a much more diffuse but also complex tool than first anticipated. The many
different uses of the term and subsequently the different perspectives and functionalities
connected to the diverse rooms are all important. When it comes to describing and specifying the
virtual Obeya concept, which is the ultimate goal of this part of the LinkedDesign project, it is
important to acknowledge the various functions, so that the virtual Obeya will fundamentally
have at least the same functions as a “traditional” obeya. Without this, we risk a concept which is
only superficially similar, but which will lack important properties and thus will not have the
same positive effects on development projects. The virtual Obeya’s added computer equipment
and networks introduce considerable extra complexity, and to compensate for this the benefits of
the virtual Obeya needs to be large if the gains in efficiency shall not be outweighed by the extra
work, problems and irritation from equipment and networks.
Acknowledgement
This work has been partly funded by the European Commission through Project LinkedDesign (No. 284613 FoF-
ICT-2011.7.4). The authors wish to acknowledge the Commission for their support.
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Especially after the 1980s, computer-aided design programs paved the way for the implementation of unusual forms and building structures in the construction industry. This situation has increased the necessity of process management and the development of existing systems in the field of construction project management has become a necessity. As a result of these developments, the concept of integrated project delivery (IPD), which aims to increase the coordination, cooperation, and communication among the team members of different disciplines, has emerged. In addition to the coordinated work of the design team; project stakeholders such as customers, contractors, and subcontractors are also directly involved in the process. In such large-scale projects, the concept of the Great Chamber, an integrated project delivery system, emerged as a collaboration platform in project management. As a result of the search for process management, the Big Room concept, which aims to increase the coordination, cooperation and communication among the team members of different disciplines, is a physical space organization that uses technology but has central human and human relations. Big Room is a design and coordination office located on the construction sites. In this office, all stakeholders are involved early on and are directly involved in the management and control of a project. Team members work together to improve team performance, interact and accelerate decision-making and reduce project costs for better communication. In this study, it is aimed to introduce, search and determine the advantages of Big Room concept which is used in many big projects in the world by searching literature. Keywords Construction industry; Project management; Integrated project delivery (IPD); Collaboration platform; Big Room
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... They depend on designing based on detailed estimate rather than estimating from a detailed design as well as allowing additional design effort to proceed and comply with certain specifications instead of the fragmented point-based design approach (Macomber and Barberio, 2007;Singer et al., 2009). This concept is similar to "Obeya", which is a form of project management used in Toyota as part of its lean production system to reduce departmental thinking (Aasland and Blankenburg, 2012), which assures the value of LT as similar to its root in production. The Last Planner System (LPS), which offers systematic process for planning in the AEC industry, is one of the methods for applying lean techniques for increasing planning reliability, improving design workflow and increasing production performance. ...
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... In some cases, condensed and essential visual information (e.g. key performance indicators, quality and safety issues, standards, etc.) are consciously displayed together in the same area to focus and trigger the discussions in regular team or managerial meetings, in what is called obeya rooms or "large rooms" (Aasland and Blankenburg, 2012). ...
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Thesis (Ph. D.)--Danmarks tekniske højskole, 1993. Includes bibliographical references (p. 231-239).
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de are making fewer errors and may be more productive than when working alone (Williams and Kessler, 2000). Here I describe a unique kind of "warroom" environment where people work closely together using a variety of computer technologies. I term this type of design activity extreme collaboration to refer to working within an electronic and Forthcoming in Communications of the ACM, December, 2001. 2 social environment that maximizes communication and information flow. This study attempts to answer an important question relevant for computer-supported cooperative work: how can physical collocation and technology together enable a team to produce a complex space mission design in a remarkably short time? The warroom for designing space mission proposals NASA's Jet Propulsion Laboratory (JPL), provides NASA-wide aid in planning missions, ranging from the ocean to deep space exploration. In April 1995, the Advance
The future of collaboration -a survey of collabotative work environments in the oil & gas industry
  • K Kristensen
Kristensen, K (2008), The future of collaboration -a survey of collabotative work environments in the oil & gas industry. http://www.kristensenconsulting.com/Default.aspx?ID=4, Oslo, Norway