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On sustainable pay as you go systems

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  • Gabrielle Demange

    (PJSE - Paris-Jourdan Sciences Economiques - ENS Paris - École normale supérieure - Paris - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique)

Abstract

An unfunded Social Security system faces the major risk, sometimes referred to as "political risk", that future generations modify or even suppress the contributions. In order to account properly for this risk, the paper considers a political process in which the support to the system is asked from each new born generation. The analysis is conducted in an overlapping generations economy that is subject to macro-economic shocks. As a consequence, the political support varies with the evolution of the economy. The impact of various factors -intra-generational redistribution, risk aversion, financial markets, governmental debt- on the political sustainability of a pay-as-you-go system is discussed.

Suggested Citation

  • Gabrielle Demange, 2005. "On sustainable pay as you go systems," PSE Working Papers halshs-00590859, HAL.
  • Handle: RePEc:hal:psewpa:halshs-00590859
    Note: View the original document on HAL open archive server: https://halshs.archives-ouvertes.fr/halshs-00590859
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    References listed on IDEAS

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    1. Michihiro Kandori, 1992. "Repeated Games Played by Overlapping Generations of Players," Review of Economic Studies, Oxford University Press, vol. 59(1), pages 81-92.
    2. Gabrielle Demange & Guy Laroque, 1999. "Social Security and Demographic Shocks," Econometrica, Econometric Society, vol. 67(3), pages 527-542, May.
    3. Feldstein, Martin & Liebman, Jeffrey B., 2002. "Social security," Handbook of Public Economics,in: A. J. Auerbach & M. Feldstein (ed.), Handbook of Public Economics, edition 1, volume 4, chapter 32, pages 2245-2324 Elsevier.
    4. Thomas F. Cooley & Jorge Soares, 1999. "A Positive Theory of Social Security Based on Reputation," Journal of Political Economy, University of Chicago Press, vol. 107(1), pages 135-160, February.
    5. Chattopadhyay, Subir & Gottardi, Piero, 1999. "Stochastic OLG Models, Market Structure, and Optimality," Journal of Economic Theory, Elsevier, vol. 89(1), pages 21-67, November.
    6. Esteban Joan Maria & Sakovics Jozsef, 1993. "Intertemporal Transfer Institutions," Journal of Economic Theory, Elsevier, vol. 61(2), pages 189-205, December.
    7. repec:cdl:ucsbec:03-98 is not listed on IDEAS
    8. Casamatta, Georges & Cremer, Helmuth & Pestieau, Pierre, 2000. " The Political Economy of Social Security," Scandinavian Journal of Economics, Wiley Blackwell, vol. 102(3), pages 503-522, June.
    9. Jeffrey R. Brown & Olivia S. Mitchell & James M. Poterba, 2001. "The Role of Real Annuities and Indexed Bonds in an Individual Accounts Retirement Program," NBER Chapters,in: Risk Aspects of Investment-Based Social Security Reform, pages 321-370 National Bureau of Economic Research, Inc.
    10. Peled, Dan, 1984. "Stationary pareto optimality of stochastic asset equilibria with overlapping generations," Journal of Economic Theory, Elsevier, vol. 34(2), pages 396-403, December.
    11. Bohn, Henning, 1998. "Risk Sharing in a Stochastic Overlapping Generations Economy," University of California at Santa Barbara, Economics Working Paper Series qt9r2809f0, Department of Economics, UC Santa Barbara.
    12. Azariadis, Costas & Galasso, Vincenzo, 2002. "Fiscal Constitutions," Journal of Economic Theory, Elsevier, vol. 103(2), pages 255-281, April.
    13. Browning, Edgar K, 1975. "Why the Social Insurance Budget Is Too Large in a Democracy," Economic Inquiry, Western Economic Association International, vol. 13(3), pages 373-388, September.
    14. Galasso, Vincenzo & Profeta, Paola, 2002. "The political economy of social security: a survey," European Journal of Political Economy, Elsevier, vol. 18(1), pages 1-29, March.
    15. Luisa Fuster & Ayse Imrohoroglu & Selahattin Imrohoroglu, 2003. "A welfare analysis of social security in a dynastic framework," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 44(4), pages 1247-1274, November.
    16. Michele Boldrin & Aldo Rustichini, 2000. "Political Equilibria with Social Security," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 3(1), pages 41-78, January.
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    Citations

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    Cited by:

    1. Gabay, Daniel & Grasselli, Martino, 2012. "Fair demographic risk sharing in defined contribution pension systems," Journal of Economic Dynamics and Control, Elsevier, vol. 36(4), pages 657-669.
    2. Hollanders, D.A., 2010. "The Political Economy of Intergenerational Risk Sharing," Discussion Paper 2010-102, Tilburg University, Center for Economic Research.

    More about this item

    Keywords

    pay-as-you-go; intra-generational redistribution; overlapping generations; social security system; political economy; risk;

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C78 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Bargaining Theory; Matching Theory

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