The purpose of the present study was to review the studies on the measurements of organizational citizenship behavior (OCB), determinants of them, the similar and the related concepts of OCB. Several major definitions of OCB were indicated and compared with similar concept (i. e., prosocial organizational behavior, organizational spontaneity, extra-role behavior, contextual performance), and related concepts, i. e., whistle blowing, organizational retaliatory behavior. The author commented on the various OCB scales used in the previous studies, e. g., Smith et al .(1983) and Podsakoff, et al .(1990). Factors affected on OCB were examined: organizational justice (procedural justice, interactional justice, distributive justice), supervisor's leadership, job satisfaction, organizational support, organizational commitment, mood in workplace, personality factors, and demographic factors, and the reasons people performed OCB were examined. Finally, the future direction of studies on OCB was discussed.