Male-female wage differentials in Japan

This paper empirically analyzes the gender wage gap in Japan using a new data set KHPS2004 which contains a wealth of information on the work history of individuals. KHPS2004 enables us to estimate wage functions without overstating individual's human capital accumulation by work experience especially for females. Neuman-Oaxaca decomposition method is employed to analyze why the gender wage gap appears to exist in Japan. Main reasons as follows. First, full-time work experience and seniority which affect significantly wages is shorter for females than for males. Second, there are significant differences in evaluation of full-time experience between males and females.