This study empirically analyzes the differences between regular and non-regular employees in organizational citizenship behavior (OCB) and customer orientation, based on the perspective that employees' job attitudes and behaviors differ according to employment type. In addition to the effects of employment type, the relationship between OCB and customer orientation, and the moderating effect of empowerment on these relationships, were also analyzed. A survey was conducted at eight luxury hotels in the Busan and Jeju regions to collect data for the empirical analysis. A total of 390 questionnaires were distributed to service employees at four hotels in Busan and four hotels in Jeju, and 306 questionnaires were returned from seven hotels. After excluding 26 questionnaires with excessive missing values, a total of 280 questionnaires were used for the analysis. Contrary to predictions based on social exchange theory, the results showed that employment type did not have a significant effect on employees' OCB or customer orientation; rather, demographic variables such as job rank and tenure were found to be significant. Second, the analysis of the relationship between OCB and customer orientation revealed that among the three dimensions of OCB, altruism and civic virtue had a significant effect on customer orientation. Employees' level of empowerment was found to amplify or substitute for the effect of OCB on customer orientation. The theoretical and managerial implications of these findings and directions for future research were discussed.