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Competitive screening in insurance markets with endogenous wealth heterogeneity

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  • Nick Netzer

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  • Florian Scheuer

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Abstract

We examine equilibria in competitive insurance markets with adverse selection when wealth differences arise endogenously from unobservable savings or labor supply decisions. The endogeneity of wealth implies that high risk individuals may ceteris paribus exhibit the lower marginal willingness to pay for insurance than low risks, a phenomenon that we refer to as irregular-crossing preferences. In our model, both risk and patience (or productivity) are privately observable. In contrast to the models in the existing literature, where wealth heterogeneity is exogenously assumed, equilibria in our model no longer exhibit a monotone relation between risk and coverage. Individuals who purchase larger coverage are no longer higher risks, a phenomenon frequently observed in empirical studies.
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Suggested Citation

  • Nick Netzer & Florian Scheuer, 2010. "Competitive screening in insurance markets with endogenous wealth heterogeneity," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 44(2), pages 187-211, August.
  • Handle: RePEc:spr:joecth:v:44:y:2010:i:2:p:187-211
    DOI: 10.1007/s00199-009-0481-x
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    References listed on IDEAS

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    1. Brown, Jeffrey R., 2001. "Private pensions, mortality risk, and the decision to annuitize," Journal of Public Economics, Elsevier, vol. 82(1), pages 29-62, October.
    2. repec:adr:anecst:y:2003:i:69:p:06 is not listed on IDEAS
    3. Nick Netzer & Florian Scheuer, 2010. "Competitive Markets without Commitment," Journal of Political Economy, University of Chicago Press, vol. 118(6), pages 1079-1109.
    4. Netzer, Nick & Scheuer, Florian, 2007. "Taxation, insurance, and precautionary labor," Journal of Public Economics, Elsevier, vol. 91(7-8), pages 1519-1531, August.
    5. Bruno Jullien & Bernard Salanié & François Salanié, 2000. "Screening Risk-Averse Agents Under Moral Hazard," Working Papers 2000-41, Center for Research in Economics and Statistics.
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    Citations

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    Cited by:

    1. Ilja Neustadt & Peter Zweifel, 2009. "Economic Well-Being, Social Mobility, and Preferences for Income Redistribution: Evidence from a Discrete Choice Experiment," SOI - Working Papers 0909, Socioeconomic Institute - University of Zurich, revised Jan 2010.
    2. Boone, J., 2014. "Basic versus Supplementary Health Insurance : The Role of Cost Effectiveness and Prevalence," Discussion Paper 2014-065, Tilburg University, Center for Economic Research.
    3. Pau Olivella & Fred Schroyen, 2014. "Multidimensional Screening in a Monopolistic Insurance Market," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 39(1), pages 90-130, March.
    4. Sandroni, Alvaro & Squintani, Francesco, 2013. "Overconfidence and asymmetric information: The case of insurance," Journal of Economic Behavior & Organization, Elsevier, vol. 93(C), pages 149-165.
    5. Scheuer, Florian, 2013. "Adverse selection in credit markets and regressive profit taxation," Journal of Economic Theory, Elsevier, vol. 148(4), pages 1333-1360.
    6. Michele Sennhauser, 2009. "Why the Linear Utility Function is a Risky Choice in Discrete-Choice Experiments," SOI - Working Papers 1014, Socioeconomic Institute - University of Zurich.
    7. Polk, Andreas & Schmutzler, Armin & Müller, Adrian, 2014. "Lobbying and the power of multinational firms," European Journal of Political Economy, Elsevier, vol. 36(C), pages 209-227.
    8. Schottmüller, Christoph, 2015. "Adverse selection without single crossing: Monotone solutions," Journal of Economic Theory, Elsevier, vol. 158(PA), pages 127-164.
    9. Jing Ai & Lin Zhao & Wei Zhu, 2016. "Contracting with Present-Biased Consumers in Insurance Markets," The Geneva Papers on Risk and Insurance Theory, Springer;International Association for the Study of Insurance Economics (The Geneva Association), vol. 41(2), pages 107-148, September.
    10. Maurus Rischatsch, 2009. "Simulating WTP Values from Random-Coefficient Models," SOI - Working Papers 0912, Socioeconomic Institute - University of Zurich.
    11. Cremer, Helmuth & Roeder, Kerstin, 2013. "Long-term care policy, myopia and redistribution," Journal of Public Economics, Elsevier, vol. 108(C), pages 33-43.
    12. Rachel J. Huang & Alexander Muermann & Larry Y. Tzeng, 2016. "Hidden Regret In Insurance Markets," Journal of Risk & Insurance, The American Risk and Insurance Association, vol. 83(1), pages 181-216, January.
    13. Maurus Rischatsch & Maria Trottmann, 2009. "Physician dispensing and the choice between generic and brand-name drugs – Do margins affect choice?," SOI - Working Papers 0911, Socioeconomic Institute - University of Zurich.
    14. repec:kap:jrisku:v:55:y:2017:i:2:d:10.1007_s11166-017-9269-8 is not listed on IDEAS

    More about this item

    Keywords

    Insurance markets; Adverse selection; Multidimensional screening; D82; G22; J22;

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G22 - Financial Economics - - Financial Institutions and Services - - - Insurance; Insurance Companies; Actuarial Studies
    • J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply

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