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Reforming pensions: principles, analytical errors and policy directions

Author

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  • Barr, Nicholas
  • Diamond, Peter
Abstract
This article, based on two books (Barr and Diamond 2008, forthcoming), sets out a series of principles for pension design rooted in economic theory: pension systems have multiple objectives, analysis should consider the pension system as a whole, analysis should be framed in a second-best context, different systems share risks differently, and systems have different effects by generation and by gender. That discussion is reinforced by identification of a series of widespread analytical errors – errors that appear in World Bank work, but by no means only in World Bank work: tunnel vision, improper use of first-best analysis, improper use of steady-state analysis, incomplete analysis of implicit pension debt, incomplete analysis of the impact of funding (including excessive focus on financial flows, failure to consider how funding is generated, and improper focus on the type of asset in trust funds), and ignoring distributional effects. The second part of the article considers implications for policy: there is no single best pension design; earlier retirement does little or nothing to reduce unemployment; unsustainable pension promises need to be addressed directly; a move from PAYG towards funding in a mandatory system may or may not be welfare improving; and implementation matters – policy design that exceeds a country’s capacity to implement it is bad policy design. We illustrate the ranges of designs of pension systems that fit the fiscal and institutional capacity constraints typical at different levels of economic development. The potential gains from simplicity imply that a country capable of implementing an administratively demanding plan does not necessarily gain from doing so. New Zealand has a simple pension system through choice, not constraint.

Suggested Citation

  • Barr, Nicholas & Diamond, Peter, 2009. "Reforming pensions: principles, analytical errors and policy directions," LSE Research Online Documents on Economics 25099, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:25099
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    File URL: http://eprints.lse.ac.uk/25099/
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    References listed on IDEAS

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    1. Richard H. Thaler & Shlomo Benartzi, 2004. "Save More Tomorrow (TM): Using Behavioral Economics to Increase Employee Saving," Journal of Political Economy, University of Chicago Press, vol. 112(S1), pages 164-187, February.
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    5. Barr, Nicholas & Diamond, Peter, 2008. "Reforming Pensions: Principles and Policy Choices," OUP Catalogue, Oxford University Press, number 9780195311303.
    6. Jonathan Gruber & David A. Wise, 1999. "Social Security and Retirement around the World," NBER Books, National Bureau of Economic Research, Inc, number grub99-1.
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    JEL classification:

    • F3 - International Economics - - International Finance
    • G3 - Financial Economics - - Corporate Finance and Governance

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