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Social Security Reform with Uninsurable Income Risk and Endogenous Borrowing Constraints

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Author Info
Juan A. Rojas () (Banco de España)
Carlos Urrutia () (Centro de Investigación Económica, Instituto Tecnológico Autónomo de México (ITAM))

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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.

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File URL: http://www.bde.es/webbde/SES/Secciones/Publicaciones/PublicacionesSeriadas/DocumentosTrabajo/06/Fic/dt0602e.pdf
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File Function: First version, February 2006
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Publisher Info
Paper provided by Banco de España in its series Banco de España Working Papers with number 0602.

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Length: 46 pages
Date of creation: Feb 2006
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Handle: RePEc:bde:wpaper:0602

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Related research
Keywords: social security; borrowing constraints; retirement accounts;

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Find related papers by JEL classification:
E6 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook
G23 - Financial Economics - - Financial Institutions and Services - - - Pension Funds; Other Private Financial Institutions
H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions

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References listed on IDEAS
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Tetsuo Ono, 2007. "Unemployment dynamics in an OLG economy with public pensions," Economic Theory, Springer, vol. 33(3), pages 549-577, December. [Downloadable!] (restricted)
  2. 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. [Downloadable!] (restricted)
    Other versions:
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