This paper presents an empirical investigation to study the relationship between employees’ psychological empowerment and organizational commitment in revenue agency of city of Semnan, Iran. The study uses two questionnaires, one for measuring the effects of psychological empowerment developed by Mishra and Spreitzer (1998) [Mishra, A. K., & Spreitzer, G. M. (1998). Explaining how survivors respond to downsizing: The roles of trust, empowerment, justice, and work redesign. Academy of management Review, 23(3), 567-588.] and the other for measuring organizational commitment developed by Meyer and Allen (1991) [Meyer, J. P., & Allen, N. J. (1991). A three-component conceptualization of organizational commitment. Human resource management review, 1(1), 61-89.]. Cronbach alphas for psychological empowerment and organizational commitment are calculated as 0.81 and 0.92, respectively, which are well above the minimum acceptable levels. The results of our survey have indicated that there were positive and meaningful relationships between psychological empowerment and organizational commitment components including Sense of efficacy (r = 0.414, Sig. =0.000), meaningful (r = 0.481, Sig. =0.000), having a choice (r = 0.341, Sig. = 0.000) and trust (r = 0.736, Sig. =0.000). However, the survey does not support any relationship between Competency and organizational commitment.