Aggregate Risk Sharing and Equivalent Financial Mechanisms in an Endowment Economy of Incomplete Participation

Pamela Labadie ()
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Pamela Labadie: George Washington University

A chapter in Recent Developments on Money and Finance, 2006, pp 127-147 from Springer

Abstract: Summary A pure endowment overlapping generations economy can be inefficient because of insufficient risk sharing. The introduction of an outside asset by a government or the existence of a clearing house can remedy the inefficiency by allowing some intergenerational risk sharing. While the typical outside asset is fiat money, many alternative financial mechanisms, such as social security, risk-free government bonds, “mispriced” deposit insurance, and income insurance can serve the same function as fiat money. Hence there are many equivalent financial mechanisms that provide intergenerational insurance. In the presence of uncertainty, there are several concepts of Pareto optimality that can be appropriately applied in an overlapping generations setting. I examine the risk-sharing arrangements associated with two different concepts of optimality, including how these arrangements are financed. The results are related to, and in some instances an extension of, the equivalence results obtained by Chamley and Polemarcharkis (1984), Weiss (1977), and Wallace (1981).

Keywords: Pareto Optimality; Competitive Equilibrium; Contingent Claim; Deposit Insurance; Money Growth (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:spr:steccp:978-3-540-29500-6_6

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DOI: 10.1007/3-540-29500-3_6

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