The purpose of this study was to investigate how work-family spillover differed by employment status of married women and to identify factors related to the differences. This study drew a sample of 332 self-employers, 181 unpaid family workers, and 1,053 wage workers from the 2014 Korean Longitudinal Survey of Women and Families. It was found that negative work-family spillover did not differ by employment status of married women. However, positive work-family spillover was found the lowest in family workers. The regression analysis showed that the difference remained after controlling socio-demographic characteristics, average working hours, and the number of days off per week. The factors related to negative spillover were age, the presence of young children, working hours, and the number of days off. Findings from this study suggest that family workers are most disadvantaged in terms of work-family spillover. Yet there is no policy developed for them. Family policy needs to take them into account in planning and implementing services.