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Social Security Reform with Uninsurable Income Risk and Endogenous Borrowing Constraints

Author

Listed:
  • Juan A. Rojas

    (Banco de España)

  • Carlos Urrutia

    (Centro de Investigación Económica, Instituto Tecnológico Autónomo de México (ITAM))

Abstract

We study the aggregate effects of a social security reform in a large overlapping generations model where markets are incomplete and households face uninsurable idiosyncratic income shocks. We depart from the previous literature by assuming that, because of lack of commitment in the credit market, the borrowing constraint in the unique asset is endogenously determined by the agents' incentives to default on previous debts. We find that a model with fixed borrowing constraints overestimates the positive effect of reforming social security on the capital stock and the saving rate, compared to our model with endogenous borrowing limit. The reason is that, in the latter, the size of precautionary savings is smaller because after the reform the incentives to default on previous debts are lower and consequently households face more relaxed borrowing limits. Adding retirement accounts to the basic model does not change these conclusions, although the quantitative importance of endogenizing borrowing constraints is reduced.

Suggested Citation

  • Juan A. Rojas & Carlos Urrutia, 2006. "Social Security Reform with Uninsurable Income Risk and Endogenous Borrowing Constraints," Working Papers 0602, Banco de España.
  • Handle: RePEc:bde:wpaper:0602
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    Cited by:

    1. Pedro Cavalcanti Ferreira & Marcelo Rodrigues dos Santos, 2013. "The Effect of Social Security, Health, Demography and Technology on Retirement," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 16(2), pages 350-370, April.
    2. Tetsuo Ono, 2007. "Unemployment dynamics in an OLG economy with public pensions," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 33(3), pages 549-577, December.
    3. Yang, Fang, 2013. "Social security reform with impure intergenerational altruism," Journal of Economic Dynamics and Control, Elsevier, vol. 37(1), pages 52-67.
    4. Hans Fehr & Christian Habermann & Fabian Kindermann, 2008. "Social Security with Rational and Hyperbolic Consumers," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 11(4), pages 884-903, October.
    5. Kumru, Cagri S. & Thanopoulos, Athanasios C., 2011. "Social security reform with self-control preferences," Journal of Public Economics, Elsevier, vol. 95(7), pages 886-899.
    6. Cagri Seda Kumru & Athanasios C. Thanopoulos, 2009. "Social Security Reform and Temptation," CESifo Working Paper Series 2778, CESifo.
    7. Kumru, Çagri S. & Thanopoulos, Athanasios C., 2008. "Social security and self control preferences," Journal of Economic Dynamics and Control, Elsevier, vol. 32(3), pages 757-778, March.

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    More about this item

    Keywords

    social security; borrowing constraints; retirement accounts;
    All these keywords.

    JEL classification:

    • E6 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook
    • G23 - Financial Economics - - Financial Institutions and Services - - - Non-bank Financial Institutions; Financial Instruments; Institutional Investors
    • H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions

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