The survival in the present insecure and competitive environment has forced organizations to have specialized and skilled employees which act beyond their duties, because the success of organizations depends on them. In the recent years, organizational citizenship behavior has attracted significant attention due to its considerable effects on the efficiency and success of the organization's personnel. This study aims to examine the effect of market orientation and organizational commitment on the organizational citizenship behavior in Iran Tejarat Bank. Five hypotheses were proposed for this purpose. The research method, according to the purpose of applied research and the manner of data collection is a descriptive and the analyzing of the model specifically is based on structural equation modeling (SEM) via AMOS and SPSS softwares. The study's statistical community is composed of 430 employees of Tejarat bank and statistical sample includes 203, which have been selected by a simple random sampling method. The research findings which are based on structural equations model indicates that market orientation and personnel's organizational commitment significantly affects organizational citizenship behavior. In addition, market orientation dimensions (customer orientation and competitor orientation) on organizational citizenship behavior have a positive and significant effect.
