Since Organ(1977) published a paper on the importance of organizational citizenship behavior, studies of organizational citizenship behavior have increased continuously. An exploratory study on the application strategy of organizational citizenship behavior for human resource management is very scarce. Many organizational researchers so far, have focused on investigating in-job behavior. Yet, from a decade, organizational researchers have recognized that in-job behavior alone can not explain sufficiently job performance or organizational effectiveness. Thus, they have paid attention to extra-job behavior, which is generally called as organizational citizenship behavior. Focusing on the importance of human resource management in organizational citizenship behavior, this paper is to examine an exploratory study on the application strategy of organizational citizenship behavior.