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Sharing Demographic Risk - Who is Afraid of the Baby Bust?

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  • Ludwig, Alexander

    ()
    (Mannheim Research Institute for the Economics of Aging (MEA) and Sonderforschungsbereich 504)

  • Reiter, Michael

    (IHS, Wien)

Abstract

We model the optimal reaction of a public PAYG pension system to demographic shocks. We compare the ex-ante first best and second best solution of a Ramsey planner with full commitment to the outcome under simple third best rules that mimic the pension systems observed in the real world. The model, in particular the pension system, is calibrated to the German economy. The objective of the social planner is calibrated such that the size of the German pension system was optimal under the economic and demographic conditions of the 1960s. We find that the German system comes relatively close to the second-best solution. Furthermore, the German system and a constant contribution rate lead to a lower variability of lifetime utility than does the second best policy. The recent baby-boom/baby-bust cycle leads to welfare losses of about 5% of lifetime consumption for some cohorts. We argue that it is crucial for these results to model correctly the labor market distortions arising from the pension system.

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Bibliographic Info

Paper provided by Sonderforschungsbereich 504, Universität Mannheim & Sonderforschungsbereich 504, University of Mannheim in its series Sonderforschungsbereich 504 Publications with number 08-47.

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Length: 45 pages
Date of creation: 01 Aug 2008
Date of revision:
Handle: RePEc:xrs:sfbmaa:08-47

Note: We thank Alan Auerbach, Axel Boersch-Supan, Juan Carlos Conesa, Peter Diamond, Martin Gervais, Ashok Kaul, Dirk Krueger, Alice Schoonbroodt and seminar participants at SCE 2006 in Cyprus, Netspar 2007 Workshop in Tilburg, MIT, Institute of Advanced Studies in Vienna, Universitat Pompeu Fabra, U.C. Berkeley, U.C. Santa Barbara, University of Cologne, University of Frankfurt, University of Mannheim, LMU Munich, University of Oslo and University of Wuerzburg for helpful comments and discussions. Alex Ludwig gratefully acknowledges financial support from the German National Research Foundation (DFG) through SFB 504, the State of Baden-Wuerttemberg and the German Insurers Association (GDV).
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References

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Citations

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Cited by:
  1. Sánchez-Romero, Miguel & Sambt, Jože & Prskawetz, Alexia, 2012. "Quantifying the role of alternative pension reforms on the Austrian economy," ECON WPS - Vienna University of Technology Working Papers in Economic Theory and Policy 04/2012, Vienna University of Technology, Institute for Mathematical Methods in Economics, Research Group Economics (ECON).
  2. Miguel Sánchez-Romero, 2013. "The role of demography on per capita output growth and saving rates," Journal of Population Economics, Springer, vol. 26(4), pages 1347-1377, October.
  3. Harenberg, Daniel & Ludwig, Alexander, 2014. "Social security and the interactions between aggregate and idiosyncratic risk," SAFE Working Paper Series 59, Research Center SAFE - Sustainable Architecture for Finance in Europe, Goethe University Frankfurt.
  4. Auerbach, Alan J. & Lee, Ronald, 2011. "Welfare and generational equity in sustainable unfunded pension systems," Journal of Public Economics, Elsevier, vol. 95(1), pages 16-27.
  5. Harenberg, Daniel & Ludwig, Alexander, 2014. "Social Security and the Interactions Between Aggregate and Idiosyncratic Risk," MEA discussion paper series 14280, Munich Center for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy.
  6. 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.
  7. Knell, Markus, 2013. "The Intergenerational Distribution of Demographic Fluctuations in Unfunded and Funded Pension Systems," Annual Conference 2013 (Duesseldorf): Competition Policy and Regulation in a Global Economic Order 79830, Verein für Socialpolitik / German Economic Association.

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