Every manager must be able, through people to achieve organizational goals. For years, the executives are learning that their ability to achieve goals directly related to their ability to inspire those around her. This is even more important today, because human affairs, communications and relationships between managers and employees has risen. Character variable is undeniable that, effective leadership is effective. The equations of organizational behavior, the psychological variables, the character of the individual. Given the importance of personality in the organization, it seems natural to choose the right person to take the position should also be based on networks and special Choices. Accordingly, the aim of this study was to analyze the influence of the type of personality directors, employees' job performance wise Iranian banks, in the province of Kermanshah. The population of this study consisted of 100 employees of the Bank, which, among them, 86 people randomly, using Cochran formula, for example, for the first half of 2014 were selected. Therefore, the research method is descriptive- survey, the type of correlation. For data collection, the 5 Factor Personality Inventory Types Costa and Mack Gray (1992), and job performance questionnaires Paterson (1992), was used. Validity of the questionnaire was confirmed by a number of university professors. The reliability was obtained with Cronbach's alpha coefficient for the first questionnaire, 0.71 and for the second questionnaire, 0.76. By using linear regression and stepwise by SPSS software the data were analyzed. Results in a significant level of 0.95 showed that that the character of managers had a significant effect on job performance.