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How Important Is Health Inequality for Lifetime Earnings Inequality?

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  • Roozbeh Hosseini

    (University of Georgia)

  • Kai Zhao

    (University of Connecticut)

  • Karen Kopecky

    (Federal Reserve Bank of Atlanta)

Abstract

Health and earnings are positively correlated due to several reasons. First, individuals who are in poor health are significantly less likely to work than healthy individuals. Second, conditional on working, individuals in poor health work fewer hours on average. Third, individuals in poor health on average earn lower wages. We document these facts using an objective measure of health called a frailty index which we construct for PSID respondents. The frailty index measures the fraction of observable health deficits an individual has. In previous work, we documented that health, as measured by the frailty index, deteriorates more rapidly and has a larger increase in dispersion with age than self-reported health. It is also more persistent over the life-cycle. These facts put together suggest that health inequality over the life cycle may be an important driver of lifetime earnings inequality. To assess this claim we develop a model of the joint dynamics of health and earnings over the life cycle. Individuals in the model face health, productivity and employment risk, and optimally choose labor supply on both the intensive and extensive margins. Agents are partially insured against these risks through government-run disability insurance, means-tested social insurance, and social security programs. They face a dynamic process for frailty (health) that is estimated using the PSID data. The model is estimated using a method of moments. Targeted moments are constructed off distributions of wages, hours, and employment rates by frailty and age. These distributions are obtained from an auxiliary simulation model that is estimated using PSID data. We find that health inequality can account for a significant share of the variation in lifetime earnings among 70 year-olds. Most of this effect is due to that unhealthy individuals exit the labor force at much younger ages than healthy ones. We find that health inequality has a larger impact on earnings inequality than previous literature for two reason. One, our model is the first in this literature that allows health to impact earnings through all three margins: participation, hours, and wages (productivity). Two, previous literature measured health using self-reported health status, and thus understated the extent to which health deteriorates with age for some individuals and the increase in health dispersion with age.

Suggested Citation

  • Roozbeh Hosseini & Kai Zhao & Karen Kopecky, 2019. "How Important Is Health Inequality for Lifetime Earnings Inequality?," 2019 Meeting Papers 1383, Society for Economic Dynamics.
  • Handle: RePEc:red:sed019:1383
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    Cited by:

    1. Tianxu Chen, 2019. "Can Health Savings Account Reduce Health Spending?: Evidence from China," Working papers 2019-08, University of Connecticut, Department of Economics.
    2. Michael Keane & Elena Capatina & Shiko Maruyama, 2019. "Health Shocks and the Evolution of Earnings over the Life-Cycle," Discussion Papers 2018-14a, School of Economics, The University of New South Wales.
    3. Daruich, Diego & Fernández, Raquel, 2020. "Universal Basic Income: A Dynamic Assessment," CEPR Discussion Papers 14869, C.E.P.R. Discussion Papers.

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