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On the Design of Sustainable and Fair PAYG Pension Systems When Cohort Sizes Change

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Abstract

In this paper, the author deals with the question how to make PAYG pension systems financially resistant to fluctuating fertility rates. The author presents two pension schemes that lead to a permanently balanced budget but differ in the mixture of changes in the contribution rates and replacement rates they require in order to achieve this result. After analyzing the variations in the central parameters (both over time and across generations) for each of the schemes he discusses which consequences they have with regard to intergenerational burden sharing and fairness. In particular, the author is interested in how a generation is affected by changes in the size of proceeding and succeeding cohorts. He introduces a proportionality measure(defined as the ratio of relative inputs to relative outputs) that can be used as an indicator to study this impact. The author shows that the schemes have quite different implications concerning how past and future cohorts influence the proportionality measure. Finally he discusses how suitable the formulas are to be implemented in either traditional PAYG or in notional defined contribution (NDC) systems.

Suggested Citation

  • Markus Knell, 2005. "On the Design of Sustainable and Fair PAYG Pension Systems When Cohort Sizes Change," Working Papers 95, Oesterreichische Nationalbank (Austrian Central Bank).
    • Handle: RePEc:onb:oenbwp:95
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    2. Carlos Vidal-Meliá & Mar𨁤el Carmen Boado-Penas, 2013. "Compiling the actuarial balance for pay-as-you-go pension systems. Is it better to use the hidden asset or the contribution asset?," Applied Economics, Taylor & Francis Journals, vol. 45(10), pages 1303-1320, April.

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    More about this item

    Keywords

    Pension System; Demographic Change; Intergenerational Fairness;
    All these keywords.

    JEL classification:

    • H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions
    • J1 - Labor and Demographic Economics - - Demographic Economics
    • J18 - Labor and Demographic Economics - - Demographic Economics - - - Public Policy
    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement

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