This study determines the impact of servant leadership on the organizational commitment, with the variable of trust of employers as a mediator factor, in the Sewage Company of Tehran. The statistic society of this research includes all 57 managers and leaders of this company according to data. Sampling was done by census method. The research method is descriptive, correlative and data gathering was done by questionnaire. Meyer and Allen (1994) questionnaire was used to evaluate the organizational commitment's questionnaire, the questionnaire of Moghimi and Ramezan (2011) was the reference of our questionnaire in measuring servant leadership element. Ultimately, Elonen et al. questionnaire (2008) was used for the questionnaire related to trust. Validity was approved by Cronbach's Alfa after using the experts’ opinion. The validity of the organizational commitment's questionnaire was 0.811, servant leadership's questionnaire was 0.805, and the organizational trust's questionnaire was 0.784. Also, data was analyzed by Structural Equation Modeling. The results illustrated that servant leadership effected on employers’ trust and organizational commitment. In addition, it was shown that servant leadership's effect on the organizational commitment is possible through the trust as a mediator variable.
Servant Leadership, Organizational Commitment, Employers’ trust