Back Background ground Self-employed professionals are responsible for the major part of the labor market. It is essential to understand the characteristics of the self-employed to promote "decent work" for this segment of workers. The current study aimed to describe the personal and work-related attributes of the self-employed group in South Korea. Methods Methods We used data from the 2006, 2010, and 2014 Korean Working Condition Survey (KWCS). For the current study, a total of 41,775 subjects included and classified them into for self-employed workers (small business owners with 0-4 employees and middle to large business owners with more than 5 employees) and workers with standard full-time employment. Socio-demographic variables included age, gender, educational attainment, income per month, and occupation. Work-related attributes included work time, weekend work, "presenteeism", and work-life balance.