Research Programs: Social Security, Taxation, and Public Finance

Social Security System to Revive Economic Vitality and Improve the Quality of Life

Project Leader/Sub-Leader


NAKATA Daigo (Senior Fellow)



First, we estimate the impact of the social security burden on corporate behavior. Especially, using micro data, the impact of employers' contributions for social insurance on employment, wages, and investment activities are analyzed. With this research, we can provide useful analysis for policy discussion to strive toward establishing a social security system which is consistent with economic activities and growth. Second, using macroeconomic simulation, we study the effect of the social security sector on economic welfare, growth, and tax revenue. In those studies, we can understand the optimal size of the social security sector in the Japanese economy. Finally, we evaluate the efficiency of long-term care (LTC) providers and the turnover factor in the LTC labor market, toward a sustainable LTC system in the super-aged Japanese society.

September 18, 2013 - December 31, 2015

Major Research Results


RIETI Discussion Papers


RIETI Discussion Papers