The purposes of this study were to investigate the mediating effects of empowerment on the relationship between the managers` servant leadership and organizational citizenship behavior in the family restaurant. The survey data was collected from 301 family restaurants employees working in the food service industry which were located in seoul. And then it was analyzed by using a SPSS WIN 12.0 version of software package and used for the analysis such as frequency analysis, factor analysis and multi-regression. The servant leadership (visionary, consensus, sense of community) has been conceptually and empirically demonstrated to be related to organizational performance in the food service industry. Furthermore, Servant leadership was positively related to Empowerment and Organizational Citizenship Behavior. Also, Empowerment acted a part mediator between servant leadership and organizational citizenship behavior. This study showed the stronger the servant leadership was, the deeper the organizational citizenship behavior was likely to happen. This result was showed that it were of great importance factors to effective human resource management on servant leadership and organizational citizenship behavior. Therefore, it is deeply needed to study that the concept of servant leadership and organizational citizenship behavior.