Elderly Care, Child Care, and Labor Supply in an Aging Japan

This paper numerically examines the impact of the financial and time cost of child care as well as elderly care on economic growth and welfare in an aging Japan within a dynamic general equilibrium framework of multi-period overlapping generations with endogenized labor supply. Simulation results indicate that the replacement rate of the public pension scheme becomes below 50 percent from year 2039, even if the currently accumulated public pension funds are used up for paying pension benefits by year 2115. Financial burdens for the first group (age 65 and over) and for the second group (age 40 - 64) in the public long-term care insurance in year 2060 become more than double and more than five times as much as the level of year 2010 in an aging Japan, respectively. While increased child benefits stimulate savings and thus they improve welfare, the impact of elimination of the time cost of child care and elderly care is quite mixed, depending on the gender and job contract types of workers within the household. When the time cost of elderly care spent by all workers irrespective of gender and job contract types is eliminated, many generations enjoy welfare gain, but when the time cost of child care by all workers is eliminated, then almost all generations, except for relatively elder generations, reversely suffer from welfare loss. When a starting age to contribute to the long-term care insurance becomes earlier from the current age of 40 to age 35, welfare of all generations improves.