Background: An important issue for organizations is to identify factors related to job motivation and use these factors to increase the level of enthusiasm of their employees. The purpose of this study is to explain the effect of ethical leadership and organizational justice on job motivation by emphasizing the mediating role of work ethic.
Methods: The present study was descriptive-correlation. The statistical population of this research was 490 employees of all administrative staff of Hamedan University of Medical Sciences. The sample size was 217 people based on Morgan table using simple random sampling method. For collecting data, four standard questionnaires were used; organizational justice, ethical leadership, work ethic and work engagement and the proposed model was analyzed using structural equations modeling.
Results: The results of the research show that the applied model is a suitable theoretical model in the process of formation of work engagement with the mediating role of work ethics and All direct relationships between the model variables were significant. Also, the results of structural equation modeling showed that organizational justice predicts 70% of work ethics in the organization, ethical leadership 55% of work ethics in the organization, work ethics 66% of work engagement, ethical leadership predicts 41% of work engagement through work ethic in organization and organizational justice predicts 47 percent predict work engagement through the work ethic in the organization.
Conclusion: According to the results of this study, by creating an atmosphere of trust and equality in the organization, by strengthening the positive personal and organizational indicators, the status of employees' work engagement can be improved. To increase the commitment and attachment of employees to the organization, it is necessary to improve the performance of the organization.