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Estimating the Tradeoff Between Risk Protection and Moral Hazard with a Nonlinear Budget Set Model of Health Insurance

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  • Amanda E. Kowalski

Abstract

Insurance induces a well-known tradeoff between the welfare gains from risk protection and the welfare losses from moral hazard. Empirical work traditionally estimates each side of the tradeoff separately, potentially yielding mutually inconsistent results. I develop a nonlinear budget set model of health insurance that allows for the calculation of both sides of the tradeoff simultaneously, allowing for a relationship between moral hazard and risk protection. An important feature of this model is that it considers nonlinearities in the consumer budget set that arise from deductibles, coinsurance rates, and stoplosses that alter moral hazard as well as risk protection relative to no insurance. I illustrate the properties of my model by estimating it using data on employer sponsored health insurance from a large firm. Within my empirical context, the average deadweight losses from moral hazard substantially outweigh the average welfare gains from risk protection. However, the welfare impact of moral hazard and risk protection are both small relative to transfers from the government through the tax preference for employer sponsored health insurance and transfers from some agents to other agents through a common premium.

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  • Amanda E. Kowalski, 2012. "Estimating the Tradeoff Between Risk Protection and Moral Hazard with a Nonlinear Budget Set Model of Health Insurance," NBER Working Papers 18108, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:18108
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    Cited by:

    1. Harold L. Cole & Soojin Kim & Dirk Krueger, 2012. "Analyzing the Effects of Insuring Health Risks: On the Trade-off between Short Run Insurance Benefits vs. Long Run Incentive Costs," NBER Working Papers 18572, National Bureau of Economic Research, Inc.
    2. Aviva Aron-Dine & Liran Einav & Amy Finkelstein, 2013. "The RAND Health Insurance Experiment, Three Decades Later," Journal of Economic Perspectives, American Economic Association, vol. 27(1), pages 197-222, Winter.
    3. Jason Abaluck & Jonathan Gruber & Ashley Swanson, 2015. "Prescription Drug Use under Medicare Part D: A Linear Model of Nonlinear Budget Sets," NBER Working Papers 20976, National Bureau of Economic Research, Inc.
    4. Gregory Cox, 2018. "Almost Sure Uniqueness of a Global Minimum Without Convexity," Papers 1803.02415, arXiv.org.
    5. Benjamin R. Handel, 2013. "Adverse Selection and Inertia in Health Insurance Markets: When Nudging Hurts," American Economic Review, American Economic Association, vol. 103(7), pages 2643-2682, December.
    6. Ed Westerhout & Kees Folmer, 2013. "Why it may hurt to be insured: the effects of capping coinsurance payments," CPB Discussion Paper 239, CPB Netherlands Bureau for Economic Policy Analysis.
    7. Aviva Aron-Dine & Liran Einav & Amy Finkelstein & Mark R. Cullen, 2012. "Moral Hazard in Health Insurance: How Important Is Forward Looking Behavior?," NBER Working Papers 17802, National Bureau of Economic Research, Inc.
    8. Benjamin R. Handel, 2011. "Adverse Selection and Switching Costs in Health Insurance Markets: When Nudging Hurts," NBER Working Papers 17459, National Bureau of Economic Research, Inc.
    9. Haizhen Lin & Daniel W. Sacks, 2016. "Intertemporal Substitution in Health Care Demand: Evidence from the RAND Health Insurance Experiment," NBER Working Papers 22802, National Bureau of Economic Research, Inc.
    10. Benjamin R. Handel & Jonathan T. Kolstad, 2013. "Health Insurance for "Humans": Information Frictions, Plan Choice, and Consumer Welfare," NBER Working Papers 19373, National Bureau of Economic Research, Inc.
    11. David Powell & Dana P. Goldman, 2014. "Moral Hazard and Adverse Selection in Private Health Insurance," Working Papers WR-1032, RAND Corporation.

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    JEL classification:

    • H00 - Public Economics - - General - - - General
    • I13 - Health, Education, and Welfare - - Health - - - Health Insurance, Public and Private

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