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Intergenerational Risk Sharing in the Spirit of Arrow, Debreu, and Rawls, with Applications to Social Security Design

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Laurence Ball
N. Gregory Mankiw

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Abstract

This paper examines the optimal allocation of risk in an overlapping-generations economy. It compares the allocation of risk the economy reaches naturally to the allocation that would be reached if generations behind a Rawlsian "veil of ignorance" could share risk with one another through complete Arrow-Debreu contingent-claims markets. The paper then examines how the government might implement optimal intergenerational risk sharing with a social security system. One conclusion is that the system must either hold equity claims to capital or negatively index benefits to equity returns.

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Paper provided by Harvard - Institute of Economic Research in its series Harvard Institute of Economic Research Working Papers with number 1921.

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Date of creation: 2001
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Handle: RePEc:fth:harver:1921

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  1. Hall, Robert E, 1978. "Stochastic Implications of the Life Cycle-Permanent Income Hypothesis: Theory and Evidence," Journal of Political Economy, University of Chicago Press, vol. 86(6), pages 971-87, December. [Downloadable!] (restricted)
  2. Henning Bohn, 1998. "Risk Sharing in a Stochastic Overlapping Generations Economy," University of California at Santa Barbara, Economics Working Paper Series wp3-98, Department of Economics, UC Santa Barbara. [Downloadable!]
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  3. Barro, Robert J, 1974. "Are Government Bonds Net Wealth?," Journal of Political Economy, University of Chicago Press, vol. 82(6), pages 1095-1117, Nov.-Dec.. [Downloadable!] (restricted)
  4. Abel, Andrew B, et al, 1989. "Assessing Dynamic Efficiency: Theory and Evidence," Review of Economic Studies, Blackwell Publishing, vol. 56(1), pages 1-19, January. [Downloadable!] (restricted)
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  5. Martin Feldstein & Elena Ranguelova, 2001. "Individual Risk in an Investment-Based Social Security System," NBER Working Papers 8074, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  1. John Y. Campbell & Yves Nosbusch, 2006. "Intergenerational Risksharing and Equilibrium Asset Prices," NBER Working Papers 12204, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  2. Marcello D’Amato & Vincenzo Galasso, 2008. "Political Intergenerational Risk Sharing," Working Papers 342, IGIER (Innocenzo Gasparini Institute for Economic Research), Bocconi University. [Downloadable!]
    Other versions:
  3. Turnovsky, Stephen J. & Bruce, Neil, 2007. "Variable Retirement and the Effects of Social Insurance on Savings, Wealth, and Welfare," Economics Discussion Papers 2007-5, Kiel Institute for the World Economy. [Downloadable!]
  4. Olovsson, Conny, 2004. "The Welfare Gains of Improving Risk Sharing in Social Security," Seminar Papers 728, Stockholm University, Institute for International Economic Studies. [Downloadable!]
  5. Egil Matsen & Øystein Thøgersen, 2000. "Designing Social Security – A Portfolio Choice Approach," Working Paper Series 1102, Department of Economics, Norwegian University of Science and Technology. [Downloadable!]
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  6. Piero Gottardi & Felix Kubler, 2009. "Social Security and Risk Sharing," Economics Working Papers ECO2009/12, European University Institute. [Downloadable!]
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  7. Turnovsky, Stephen J. & Bruce, Neil, 2007. "Uncertain Retirement and the Effects of Social Insurance on Savings, Wealth, and Welfare," Economics - The Open-Access, Open-Assessment E-Journal, Kiel Institute for the World Economy, vol. 1(2), pages 1-41. [Downloadable!]
  8. Ennio Bilancini & Massimo D'Antoni, 2008. "Pensions and Intergenerational Risk-Sharing When Relative Consumption Matters," Department of Economics University of Siena 541, Department of Economics, University of Siena. [Downloadable!]
  9. Espen Henriksen & Steve Spear, 2006. "Dynamic Suboptimality of Competitive Equilibrium in Multiperiod Overlapping Generations Economies," Computing in Economics and Finance 2006 223, Society for Computational Economics. [Downloadable!]
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  10. Jovan Zamac, 2005. "Pension Design when Fertility Fluctuates: The Role of Capital Mobility and Education Financing," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
  11. Beetsma, Roel & Bovenberg, A Lans & Romp, Ward E, 2008. "Funded Pensions and Intergenerational and International Risk Sharing in General Equilibrium," CEPR Discussion Papers 7106, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  12. Øystein Thøgersen, 2006. "Intergenerational Risk Sharing by Means of Pay-as-you-go Programs – an Investigation of Alternative Mechanisms," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
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