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- Implementation Of Optimal Contracts Under Adverse Selection

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Author Info

  • Bernarda Zamora

    (Universidad de Alicante)

  • Pablo Amorós

    (Universidad de Alicante)

Abstract

This paper studies the principal-multiagent model of a firm subject to adverse selection. We focus on agents who have complete information. We propose some desirable properties to be satisfied by mechanisms implementing the first-best in Nash equilibrium: (i) enforceability (a property related with the individual rationality of the mechanism), (ii) renegotiation-proofness, (iii) small strategy spaces, (iv) unique implementation, (v) unique best-reply and (vi) no mixed strategies. We prove that enforceability is not compatible with renegotiation-proofness or the unique best-reply property. Then we propose two mechanisms. The first one satisfies properties (i), (ii) and (iv). The second mechanism verifies all properties but enforceability.

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File URL: http://www.ivie.es/downloads/docs/wpasad/wpasad-1998-25.pdf
File Function: Fisrt version / Primera version, 1998
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Bibliographic Info

Paper provided by Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie) in its series Working Papers. Serie AD with number 1998-25.

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Length: 44 pages
Date of creation: Dec 1998
Date of revision:
Publication status: Published by Ivie
Handle: RePEc:ivi:wpasad:1998-25

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Related research

Keywords: adverse selection; contract theory; implementation theory;

References

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  1. Dutta, Bhaskar & Sen, Arunava, 1991. "A Necessary and Sufficient Condition for Two-Person Nash Implementation," Review of Economic Studies, Wiley Blackwell, vol. 58(1), pages 121-28, January.
  2. Demski, Joel S. & Sappington, David, 1984. "Optimal incentive contracts with multiple agents," Journal of Economic Theory, Elsevier, vol. 33(1), pages 152-171, June.
  3. Reichelstein, Stefan & Reiter, Stanley, 1988. "Game Forms with Minimal Message Spaces," Econometrica, Econometric Society, vol. 56(3), pages 661-92, May.
  4. Matthew 0. Jackson, 1989. "Implementation in Undominated Strategies - A Look at Bounded Mechanisms," Discussion Papers 833, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  5. Glover Jonathan, 1994. "A Simpler Mechanism That Stops Agents from Cheating," Journal of Economic Theory, Elsevier, vol. 62(1), pages 221-229, February.
  6. Gibbard, Allan, 1973. "Manipulation of Voting Schemes: A General Result," Econometrica, Econometric Society, vol. 41(4), pages 587-601, July.
  7. Ma, Ching-to & Moore, John & Turnbull, Stephen, 1988. "Stopping agents from "cheating"," Journal of Economic Theory, Elsevier, vol. 46(2), pages 355-372, December.
  8. Moore, John & Repullo, Rafael, 1990. "Nash Implementation: A Full Characterization," Econometrica, Econometric Society, vol. 58(5), pages 1083-99, September.
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