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The purpose of this study was to examine the effects of ethical leadership on psychological empowerment and organizational commitment, and to examine the mediating effects of the psychological empowerment on the relationships between the ethical leadership and organizational commitment. In order to verify the relationships and mediating effect, data were obtained from 277 employees working in firms at Changwon City were analyzed by using SPSS 12.0. and AMOS 5.0. The findings are as follows: First, there was a positive relationship between the ethical leadership and the psychological empowerment. Second, there was also a positive relationship between the psychological empowerment and the organizational commitment. Third, there was a positive relationship between the ethical leadership and the organizational commitment. Finally, the psychological empowerment was a partial mediator on the relationship between the ethical leadership and the organizational commitment. Based on these findings, the implications and the limitations of the research findings were discussed, and recommendations for future research were provided.