The objective of research is to investigate (1) the effect of job satisfaction on employee organizational commitment (2) the influence of work involvement on organizational commitment, (3) the influence of leadership style on employee organizational commitment (4) the effect of job satisfaction on employee performance (5) influence work involvement on employee performance, (6) influence of leadership style on employee performance (7) influence of organizational commitment on employee performance (8) influence of job satisfaction, work involvement and leadership style on employee performance through employee organizational commitment. The object of this research is job satisfaction, work involvement, leadership style, employee organizational commitment and employee performance. Data analysis equipment used in the analysis of structural equation modeling (SEM) research with the help of the Amos program. The results showed that job satisfaction, work involvement, leadership style, organizational commitment and employee performance, job satisfaction had an effect on organizational commitment, work involvement had an effect on organizational commitment, leadership style had an effect on organizational commitment, job satisfaction had an effect on employee performance, work involvement as well give effect to employee performance, leadership style affects employee performance, employee organizational commitment has a positive and significant effect on employee performance, there is an indirect influence on job satisfaction, work involvement and leadership style on employee performance. Because partially mediated organizational commitment in mediating variables of job satisfaction, work involvement and leadership style on employee performance, it is advisable to the leadership if you want to improve service performance, it can be done by simply improving the variables of job satisfaction, work involvement and leadership style alone or also improve commitment organization.