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Insurance and Inequality with Persistent Private Information

Author

Listed:
  • Bloedel, Alex

    () (Stanford University)

  • Krishna, R. Vijay

    () (Florida State University)

  • Leukhina, Oksana

    () (Federal Reserve Bank of St. Louis)

Abstract

We study optimal insurance contracts for an agent with Markovian private information. Our main results characterize the implications of constrained efficiency for long-run welfare and inequality. Under minimal technical conditions, there is Absolute Immiseration: in the long run, the agent’s consumption and utility converge to their lower bounds. When types are persistent and utility is unbounded below, there is Relative Immiseration: low-type agents are immiserated at a faster rate than high-type agents, and “pathwise welfare inequality” grows without bound. These results extend and substantially generalize the hallmark findings from the classic literature with iid types, suggesting that the underlying forces are robust to a broad class of private information processes. The proofs rely on novel recursive techniques and martingale arguments. When the agent has CARA utility, we also analytically and numerically characterize the short-run properties of the optimal contract. Persistence gives rise to qualitatively novel short-run dynamics and allocative distortions (or “wedges”) and, quantitatively, induces less efficient risk-sharing. We compare properties of the wedges to their counterparts in the dynamic taxation literature.

Suggested Citation

  • Bloedel, Alex & Krishna, R. Vijay & Leukhina, Oksana, 2018. "Insurance and Inequality with Persistent Private Information," Working Papers 2018-20, Federal Reserve Bank of St. Louis.
  • Handle: RePEc:fip:fedlwp:2018-020
    DOI: doi.org/10.20955/wp.2018.020
    Note: This paper was previously circulated as “Misery, Persistence, and Growth” by Bloedel and Krishna.
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    References listed on IDEAS

    as
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    More about this item

    Keywords

    Absolute immiseration; relative immiseration; dynamic contracting; recursive contracts; principal-agent problem; persistent private information.;

    JEL classification:

    • C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
    • D30 - Microeconomics - - Distribution - - - General
    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • E61 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Policy Objectives; Policy Designs and Consistency; Policy Coordination

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