The subjects of this study are mainly the 146 salespeople of the 31 Life-Insurance Companies in Taipei. We develop a LISREL model to measure the relationships among the person-organization fit, job satisfaction and organization citizenship behavior. Through empirically examining, the results support the assumptions that the person-organization fit (supplementary and complementary fit) influences positively job satisfaction; job satisfaction positively affects organization citizenship behavior & There is direct relation between supplementary fit and organization citizenship behavior. The empirical results indicate the importance of person-organization fit. Managers should pay close attention in the hiring process and assess the levels of person-organization fit that employees will be willing to perform organization citizenship behavior and perceive more job satisfaction.