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Public versus Private Insurance with Non-Expected Utility: A Political Economy Argument

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  • Jean Hindriks

    (Queen Mary, University of London)

Abstract

This paper analyzes the political support for public insurance in the presence of a private insurance alternative. The public insurance is compulsory and offers a uniform insurance policy. The private insurance is voluntary and can offer different insurance policies. Adopting Yaari's (1987) dual theory to expected utility (i.e., risk aversion without diminishing marginal utility of income), we show that adverse selection on the private insurance market may lead a majority of individuals to prefer public insurance over private insurance, even if the median risk is below the average risk (so that the median actually subsidizes high-risk individuals). We also show that risk aversion makes public insurance more attractive and that the dual theory is less favourable to a mixed insurance system than the expected utility framework. Lastly, we demonstrate how the use of genetic tests may threaten the political viability of public insurance.

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Bibliographic Info

Paper provided by Queen Mary, University of London, School of Economics and Finance in its series Working Papers with number 439.

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Date of creation: Oct 2001
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Handle: RePEc:qmw:qmwecw:wp439

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Keywords: Voting; Insurance; Adverse selection;

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  1. Hindriks, Jean & De Donder, Philippe, 2003. "The politics of redistributive social insurance," Journal of Public Economics, Elsevier, vol. 87(12), pages 2639-2660, December.
  2. Yaari, Menahem E, 1987. "The Dual Theory of Choice under Risk," Econometrica, Econometric Society, vol. 55(1), pages 95-115, January.
  3. Julia Lynn Coronado & Don Fullerton & Thomas Glass, 2000. "The Progressivity of Social Security," NBER Working Papers 7520, National Bureau of Economic Research, Inc.
  4. Mailath, George J, 1987. "Incentive Compatibility in Signaling Games with a Continuum of Types," Econometrica, Econometric Society, vol. 55(6), pages 1349-65, November.
  5. CREMER, Helmuth & PESTIEAU, Pierre, 1995. "Redistributive Taxation and Social Insurance," CORE Discussion Papers 1995054, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  6. Eckstein, Zvi & Eichenbaum, Martin & Peled, Dan, 1985. "Uncertain lifetimes and the welfare enhancing properties of annuity markets and social security," Journal of Public Economics, Elsevier, vol. 26(3), pages 303-326, April.
  7. Doherty, Neil A & Eeckhoudt, Louis, 1995. "Optimal Insurance without Expected Utility: The Dual Theory and the Linearity of Insurance Contracts," Journal of Risk and Uncertainty, Springer, vol. 10(2), pages 157-79, March.
  8. Epple, Dennis & Romano, Richard E, 1996. "Public Provision of Private Goods," Journal of Political Economy, University of Chicago Press, vol. 104(1), pages 57-84, February.
  9. David Miles & Allan Timmermann, 1999. "Risk sharing and transition costs in the reform of pension systems in Europe," Economic Policy, CEPR & CES & MSH, vol. 14(29), pages 251-286, October.
  10. Karni, Edi & Zilcha, Itzhak, 1986. "Welfare and comparative statics implications of fair social security : A steady-state analysis," Journal of Public Economics, Elsevier, vol. 30(3), pages 341-357, August.
  11. Miguel Gouveia, 1997. "Majority rule and the public provision of a private good," Public Choice, Springer, vol. 93(3), pages 221-244, December.
  12. Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680.
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