Purpose This study attempted to investigate the difference on job satisfaction and service quality between non-regular and regular workers in commercial sports facilities. Methods With the purpose of the study, the purposive sampling as the non-probability sampling method was used to intentionally select the representative cases. We conducted through utilizing in-depth interviews with 6 non-regular and regular workers, respectively, who have worked for more than a year at total commercial sports facilities holding more than 3 programs with more than 500 memberships. This study aimed to explain real phenomena as much as possible by utilizing NVivo 11, one of qualitative research method programs, on the basis of raw data. Results In conclusion, non-regular and regular employment types in commercial sports facilities did not affect service quality provided for customers. However, it was derived that there was a slight difference between regular and non-regular workers on job satisfaction. Conclusion It is necessary to improve the wage and compensation system for regular workers as well as the labor policy to improve treatment of the wage according to the qualification of non-regular workers in commercial sports facilities. In spite of the instability of non-regular workers, the effort of converting into regular workers would evoke organizational commitment, loyalty, and attachment of non-regular workers, when properly acknowledged.
