Inequalities and Unfair Income Distribution in Japan

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Sayaka Sakoda


There has been a debate about what measurement is most appropriate for measuring inequality because the classical index does not distinguish between what is fair and unfair distribution of income. In this empirical study, the "Responsibility-Sensitive Egalitarian Theory" is applied for the case of Japan. Our paper firstly tracks the historical evolution of inequalities and concludes that the Japanese accept pre-tax income inequality because they believe their socio-economic class is determined by luck. Secondly, illustrating the Unfairness Lorenz Curve by gender shows that females face more unfairness than males: the pre-tax income of middle-income males increases slightly compared to the fair-income group from 2010 to 2013. However,the opposite is true for females in the bottom and middle classes. Considering there already exists a gender wage gap in Japan, it is necessary to take action to reduce inequality.


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Sakoda, S. (2020). Inequalities and Unfair Income Distribution in Japan. World Journal of Applied Economics, 6(1), 91-98.
Brief Articles


Almås, I., Cappelen, A. W., Lind, J. T., Sørensen, E. Ø., & Tungodden, B. (2011). Measuring Unfair (in) Equality. Journal of Public Economics, 95, 488-99. doi:10.1016/j.jpubeco.2010.11.002

Anderson, E. S. (1999). What is the Point of Equality? Ethics, 109, 287-337. doi:10.1086/233897

Arneson, R. J. (1989). Equality and Equal Opportunity for Welfare. Philosophical Studies, 56, 77-93. doi:10.1007/BF00646210

Betts, J. R., & Roemer, J. E. (1999). Equalizing Educational Opportunity Through Educational Finance Reform. Working Papers, University of California, Davis, Department of Economics.

Bourguignon, F., Ferreira, F. H., & Menéndez, M. (2007). Inequality of Opportunity in Brazil. Review of Income and Wealth, 53, 585-618. doi:10.1111/j.1475-4991.2007.00247.x

Cappelen, A. W., & Tungodden, B. (2007). Local Autonomy and Interregional Equality. Social Choice and Welfare, 28, 443-60. doi:10.1007/s00355-006-0183-2

Cohen, G. A. (1989). On the Currency of Egalitarian Justice. Ethics, 99, 906-44. doi:10.1086/293126

Devooght, K. (2008). To Each the Same and to Each his Own: A Proposal to Measure Responsibility-Sensitive Income Inequality. Economica, 75, 280-95. doi:10.1111/j.1468-0335.2007.00602.x

Dworkin, R. (1981). What Is Equality? Part 1: Equality of Welfare. Philosophy & Public Affairs, 10, 185-246.

Dworkin, R. (1981). What Is Equality? Part 2: Equality of Resources. Philosophy & Public Affairs, 10, 283-345.

Dworkin, R. (2002). Sovereign Virtue: The Theory and Practice of Equality. Harvard University Press.

Greenfield, K. (2011). The Myth of Choice: Personal Responsibility in a World of Limits. Yale University Press.

Hashimoto, K. (2018). Social Class in Japan (in Japanese). Kodansha-Gendai-Shinsyo.

Hufe, P., Kanbur, R., & Peichl, A. (2018). Measuring Unfair Inequality.

Mirrlees, J. A. (1971). An Exploration in the Theory of Optimum Income Taxation. The Review of Economic Studies, 38, 175-208. doi:10.2307/2296779

Mizoguchi, T. (1974). Income and Assets Distributions in Post-war Japan (in Japanese). Economic Review, 25, 345-66. doi:10.15057/23750

OECD. (2017). The Pursuit of Gender Equality. doi:10.1787/9789264281318-en

Otsuki, T., & Takamatsu, N. (1978). An Aspect of the Size Distribution of Income in Prewar Japan. Discussion Papers, International Development Center of Japan.

Page, M., & Roemer, J. E. (2001). The U.S. fiscal System as an Opportunity-Equalizing Device. In K. A. Hassett, & R. G. Hubbard (Eds.), Inequality and Tax Policy (pp. 134-65). The American Enterprise Institute Press.

Roemer, J. E. (1993). A Pragmatic Theory of Responsibility for the Egalitarian Planner. Philosophy & Public Affairs, 22, 146-66.

Rosanvallon, P. (1995). The New Social Question: Rethinking the Welfare State [La Nouvelle Question Sociale. Repenser l'Etat-providence]. Seuil.

Stavem, F. P., & Støren, B. N. (2016). Fairness and Inequality: Measuring Fairness Preferences and Identifying the Unfair Income Inequality in Germany.