The purpose of this study is to examine the effects of the perception of compensation equity on the organizational commitment, and the potential mediating roles of trust in that process. The results were as follows; First, the perception of compensation equity(pay and promotion equity) has a positive influence on organizational commitment. Second, hierarchical regression showed that promotion equity added to pay equity in expanding the variance of the organizational commitment. Third, according to results of regression analysis was found for mediating role of trust in their leaders in the relationships between compensation equity and organizational commitment. The result of the study implies that trust is a crucial factor in the explanation of organizational commitment and hotel managers are able to motivate organizational commitment by paying more attentions to trust in their leaders.