The impact of personality on the job performance of the human resources is absolutely clear and many organizations use this effect for hiring their employees. Personality is one of the most significant topics considered by the job advisors. The appointment of the right people in the right jobs significantly enhances the individual and the organizational performance. Clearly, the individuals have different personalities just like the different characteristics of the careers. Based on this method, many efforts are made to appoint the right people to the right jobs. Although, cognitive ability previously has been found to be the most reliable and valid predictor of job performance across occupations, various studies and meta-analyses have indicated that human personality traits, are highly related to job performance. The relationship between personality traits and job performance has been studied to a great extent and the field has flourished to become a hot topic under investigation.