Organizational citizenship behavior is one of the most important factors affecting the performance of higher education institutes. The emergence and development of the concept of organizational citizenship behavior have created a major change in the field of organizational behavior. In other words, the important role this structure plays in explaining organizational behavior and its status in educational administration theories led to the study of its effect on occupational and behavioral factors. Also, due to the significant effects that some variables have on employees' organizational citizenship behavior, the role of these factors, such as personality traits, Islamic work ethic, servant leadership, and ethical leadership in their organizational citizenship behavior has been investigated. Briefly, the objective of the present study was to evaluate the structural relationships among antecedents, consequences of academic staff's organizational citizenship behavior. In this regard, 232 people were selected from the staffs of Urmia University through a stratified random sampling method. The data of the present study were gathered by 12 standard questionnaires. The methods of conformity factor analysis and the structural equations model were used by SPSS 22 and LISREL 8. 45 software in order to analyze the data. The results of the structural equations modeling indicated that personality traits of Islamic ethics, ethical leadership, and organizational citizenship behavior have a direct and significant relationship and a prerequisite for organizational citizenship behavior. The results also showed that feeling and increasing organizational citizenship behavior among employees with increasing social capital, entrepreneurship, participation, empowerment, and productivity of manpower and reducing job burnout. In this model, all loadings-except for the relationship between organizational citizenship behavior with servant leadership and job cracks-were statistically significant.