This paper by Nayeon Lim and Minsik Choi explores the relationship between working hours and the gender wage gap in Korea. Because the labor practice of working long hours in South Korea favors men, who tend to spend little time on domestic labor, long working hours can influence the gender wage gap by discriminating against women. Among other factors, working hours have a positive effect on the gender wage gap in male-dominated occupations, but not in female-dominated ones. Thus, working long hours could be a primary factor explaining the large gender wage gap in Korea, where most occupations are male-dominated.