Abstract
This paper examines whether parent-youth coresidence and parents' income affect the labor supply of unmarried Japanese women. The Japanese Panel Survey of Consumption is used to estimate the labor supply function. Parent-youth coresidence reduces the labor supply of unmarried women. However, the reason differs with generation. Unmarried women whose parent is under 60 years old and who live with their parents reduce the labor supply because their parents support them, while those whose parent is more than 60 years old reduce the labor supply because they have to help a widowed father. Moreover, parents' income does not affect the labor supply. Specifically, unmarried women cannot use their parents' income as unearned income. In conclusion,unmarried women enjoy their life with their altruistic parents when they are young. However, as they get older, they have to help their prents.
