Contribution of Women in Household Income— Based Perspective on Production

Analyses by family type based on age brackets are useful for structural analysis. We confirmed substantial wage-earning differences between the sexes, full- and part-timers, and large-work hour differences between the sexes. Unpaid work using opportunity cost is generally underestimated because of the Japanese seniority-based wage system. Then, we tried to make adjusted indices to account for wage-earnings and work-our differentials. We compare three kinds of income –market income, broad income (including unpaid work values) and adjusted income--in terms of the contribution of married women to family income. The disproportionate burden placed on women was highlighted.