Background: It has been shown that the application of ethical leadership has a great result for the organization. The aim of this research is to analyze the relation of ethical leadership with organizational citizenship behavior and also to investigate this type of leadership with organizational citizenship behavior through of leader-member exchange, organizational commitment and job satisfaction.

Methods: This research is descriptive-correlation. Population includes all the employees of Maroon oil and Gas Company which 250 persons have been selected by simple random selection. Data have been gathered by ethical leadership, leader-member exchange, organizational, job satisfaction and organizational citizenship behavior and job satisfaction questionnaire, and analyzed by structural equation modeling and bootstrap method.

Results: Structural equation modeling analyses indicated that the proposed model fit the data properly. The results also supported the direct relationship of ethical leadership and organizational citizenship behavior and indirect positive relationship of ethical leadership and organizational citizenship behavior through leader – member exchange, organizational commitment and job satisfaction.

Conclusion: Applying ethical leadership style is in relation with the exceeding efficiency of employees. Therefore, with the use of this kind of leadership, the organization can see this kind of behaviors in their employees and consequently increase the efficiency of their organization.