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Audit Competition in Insurance Oligopolies

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  • Boccard, Nicolas
  • Legros, Patrick

Abstract

We provide a simple framework for analyzing how competition affects the choice of audit structures in an oligopolistic insurance industry. When the degree of competition increases, fraud increases but the response of the industry in terms of investment in audit quality follows a U-shaped pattern. Following increases in competition, the investment in audit quality will decrease if the industry is initially in a low competition regime while it will increase when the industry is in a high competition regime. We use these results to show that firms will benefit from forming a joint audit agency only when the degree of competition is intermediate and that cooperation might improve total welfare; we also analyze the effects of contract innovation on the performance of the industry.

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Bibliographic Info

Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 3478.

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Date of creation: Jul 2002
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Handle: RePEc:cpr:ceprdp:3478

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Related research

Keywords: audit; insurance fraud; oligopoly;

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References

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  1. Mookherjee, Dilip & Png, Ivan, 1989. "Optimal Auditing, Insurance, and Redistribution," The Quarterly Journal of Economics, MIT Press, vol. 104(2), pages 399-415, May.
  2. Steven C. Salop, 1979. "Monopolistic Competition with Outside Goods," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 141-156, Spring.
  3. Nahum D. Melumad & Dilip Mookherjee, 1989. "Delegation as Commitment: The Case of Income Tax Audits," RAND Journal of Economics, The RAND Corporation, vol. 20(2), pages 139-163, Summer.
  4. Robert Townsend, 1979. "Optimal contracts and competitive markets with costly state verification," Staff Report 45, Federal Reserve Bank of Minneapolis.
  5. Reinganum, Jennifer F. & Wilde, Louis L., 1985. "Income tax compliance in a principal-agent framework," Journal of Public Economics, Elsevier, vol. 26(1), pages 1-18, February.
  6. Picard, Pierre, 1996. "Auditing claims in the insurance market with fraud: The credibility issue," Journal of Public Economics, Elsevier, vol. 63(1), pages 27-56, December.
  7. Border, Kim C & Sobel, Joel, 1987. "Samurai Accountant: A Theory of Auditing and Plunder," Review of Economic Studies, Wiley Blackwell, vol. 54(4), pages 525-40, October.
  8. Tennyson, Sharon, 1997. "Economic institutions and individual ethics: A study of consumer attitudes toward insurance fraud," Journal of Economic Behavior & Organization, Elsevier, vol. 32(2), pages 247-265, February.
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Cited by:
  1. Patrick Legros & Konrad Stahl, 2003. "Global vs.Local Competition," DNB Staff Reports (discontinued) 97, Netherlands Central Bank.
  2. Bénédicte Coestier & Nathalie Fombaron, 2003. "L'audit en assurance," THEMA Working Papers 2003-41, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.

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