This study aims to understand the relation between the perceived social exchange of employees in service industry, which is focused on food service industry, and the organizational citizenship behavior, and to consider the efficiency of human resources management in service industry. To achieve the purpose of this study, a documentary study and an empirical study based on a structural equation model analysis were carried out. In this study, the social exchange consist of perceived leader support, perceived coworker support, and perceived organization support. Also the organizational citizenship behavior consist of organizational citizenship behavior for individual and organizational citizenship behavior for organization. And then, the relation between the variables was found out. Finally, based upon the results of analysis, this study was suggested for human resources management in service industry.