Inequality in current and lifetime income

Rolf Aaberge and Magne Mogstad

Social Choice and Welfare, 2015, vol. 44, issue 2, 217-230

Abstract: To gauge inequality in living standards, the distribution of lifetime income is likely to be more relevant than the distribution of current income. Yet, empirical studies of income inequality are typically based on observations of income for one or a few years. In this paper, we exploit a unique data set with nearly career-long income histories to assess the role of so-called life-cycle bias in empirical analysis of income inequality that uses current income variables as proxies for lifetime income. We find evidence of substantial life-cycle bias in estimates of inequality based on current income. One implication is that cross-sectional estimates of income inequality are likely to be sensitive to the age composition of the sample. A decomposition of the life-cycle bias into income mobility and heterogeneous profiles reveal the importance of two explanations that have been put forth to explain the disagreement between current and lifetime inequality. Copyright Springer-Verlag Berlin Heidelberg 2015

Date: 2015
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Citations: View citations in EconPapers (27)

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Working Paper: Inequality in current and lifetime income (2012)
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sochwe:v:44:y:2015:i:2:p:217-230

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DOI: 10.1007/s00355-014-0838-3

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