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Supplementary Insurance with Ex-Post Moral Hazard: Efficiency and Redistribution

This paper investigates the topping-up scheme in health insurance when both public and private firms use linear contracts. First, the case with identical consumers is analyzed. The optimal public coverage is derived both when the firms play simultaneously and when they play sequentially. In the former case consumers are over-insured, whereas, in the latter case, the second-best allocation is obtained. Then, consumers’ heterogeneity is introduced: consumers differ in their wage rate and labour supply is endogenous. It is assumed that public coverage is uniform and health expenditures are financed by linear taxation. Results show that, in the sequential game, the optimal public coverage is negative and consumers are under-insured.

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Paper provided by Dipartimento Scienze Economiche, Universita' di Bologna in its series Working Papers with number 521.

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Date of creation: 2004
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Handle: RePEc:bol:bodewp:521
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  1. Cremer, H. & Pestieau, P., . "Redistributive taxation and social insurance," CORE Discussion Papers RP 1235, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  2. BOADWAY, Robin & LEITE-MONTEIR, Manuel & MARCHAND, Maurice & PESTIEAU, Pierre, . "Social insurance and redistribution," CORE Discussion Papers RP 1643, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  3. Henriet, D. & Rochet, J.-C., 1998. "Is Public Health Insurance an Appropriate Instrument for Redistribution," Papers 98.512, Toulouse - GREMAQ.
  4. Wolfe, John R. & Goddeeris, John H., 1991. "Adverse selection, moral hazard, and wealth effects in the medigap insurance market," Journal of Health Economics, Elsevier, vol. 10(4), pages 433-459.
  5. Blomqvist, A. & Johansson, P-O., 1997. "Economic efficiency and mixed public/private insurance," Journal of Public Economics, Elsevier, vol. 66(3), pages 505-516, December.
  6. F. Barigozzi, 2001. "Reimbursing Preventive Care," Working Papers 403, Dipartimento Scienze Economiche, Universita' di Bologna.
  7. Selden, Thomas M., 1997. "More on the economic efficiency of mixed public/private insurance," Journal of Public Economics, Elsevier, vol. 66(3), pages 517-523, December.
  8. Ettner, Susan L., 1997. "Adverse selection and the purchase of Medigap insurance by the elderly," Journal of Health Economics, Elsevier, vol. 16(5), pages 543-562, October.
  9. Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-77, June.
  10. Gerdtham, Ulf-G. & Sogaard, Jes & Andersson, Fredrik & Jonsson, Bengt, 1992. "An econometric analysis of health care expenditure: A cross-section study of the OECD countries," Journal of Health Economics, Elsevier, vol. 11(1), pages 63-84, May.
  11. van Doorslaer, Eddy & Wagstaff, Adam & van der Burg, Hattem & Christiansen, Terkel & De Graeve, Diana & Duchesne, Inge & Gerdtham, Ulf-G & Gerfin, Michael & Geurts, Jose & Gross, Lorna, 2000. "Equity in the delivery of health care in Europe and the US," Journal of Health Economics, Elsevier, vol. 19(5), pages 553-583, September.
  12. Wagstaff, Adam & van Doorslaer, Eddy, 1992. "Equity in the finance of health care: Some international comparisons," Journal of Health Economics, Elsevier, vol. 11(4), pages 361-387, December.
  13. Petretto, Alessandro, 1999. "Optimal social health insurance with supplementary private insurance," Journal of Health Economics, Elsevier, vol. 18(6), pages 727-745, December.
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