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Optimal population growth and social security reform with heterogeneous agents


  • ABIO, G.
  • PATXOT, C.


In this paper we propose a pension policy that would isolate the social security system from any financial crisis resulting from changes in population structure. This policy consists of linking social security benefits to the fertility behaviour of the individual. We present a theoretical analysis to show that this policy restores the optimality of the capital-labour ratio and the population growth rate in an overlapping-generations model with endogenous fertility. We extend this analysis to the case of heterogeneous agents with respect to their preferences towards children.

Suggested Citation

  • Abio, G. & Patxot, C., 2001. "Optimal population growth and social security reform with heterogeneous agents," CORE Discussion Papers 2001027, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  • Handle: RePEc:cor:louvco:2001027

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    References listed on IDEAS

    1. Michel, Philippe & Pestieau, P, 1993. "Population Growth and Optimality: When Does Serendipity Hold?," Journal of Population Economics, Springer;European Society for Population Economics, vol. 6(4), pages 353-362, November.
    2. Nerlove, Marc & Razin, Assaf & Sadka, Efraim, 1987. "Household and Economy," Elsevier Monographs, Elsevier, edition 1, number 9780125157520 edited by Shell, Karl.
    3. Eckstein, Zvi & Wolpin, Kenneth I., 1985. "Endogenous fertility and optimal population size," Journal of Public Economics, Elsevier, vol. 27(1), pages 93-106, June.
    4. Hans-Werner Sinn, 1997. "The Value of Children and Immigrants in a Pay-As-You-Go Pension System: A Proposal for a Partial Transition to a Funded System," NBER Working Papers 6229, National Bureau of Economic Research, Inc.
    5. Bental, Benjamin, 1989. "The Old Age Security Hypothesis and Optimal Population Growth," Journal of Population Economics, Springer;European Society for Population Economics, vol. 1(4), pages 285-301.
    6. Samuelson, Paul A, 1975. "The Optimum Growth Rate for Population," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 16(3), pages 531-538, October.
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    Cited by:

    1. Gemma Abio, 2003. "Interiority of the optimal population growth rate with endogenous fertility," Economics Bulletin, AccessEcon, vol. 10(4), pages 1-7.

    More about this item


    pay-as-you-go social security system; overlapping-generations model; endogenous fertility; heterogeneous agents; optimal population growth;

    JEL classification:

    • H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions
    • J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth
    • J18 - Labor and Demographic Economics - - Demographic Economics - - - Public Policy


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