The purpose of the study is to identify the impacts of employee`s perceived ethical climate on subjective career success and organizational commitment. And it is to examine the mediating effect of organizational commitment in the relationship between ethical climate and subjective career success. Data were collected from employees working in service encounter departments (room and F&B divisions) of five star hotels in Seoul, South Korea. Hypotheses were examined by using path analysis and the results were as follows. First, ethical climate of hotel had a significant effect on subjective career success and organizational commitment. Second, organizational commitment had a significant impact on subjective career success. Third, the mediating effect of organizational commitment between ethical climate and subjective career success was confirmed, which means it played an important role in ethical climate leading to subjective career success. The findings of the study can suggest practical implications to utilize efficiently human resources to hotel managers for hotels` sustainable development.