This paper extends Gertler's (1999) tractable overlapping generations model by allowing for imperfect labour markets and distortionary taxation. Furthermore, we allow for stochastic variation in demographic structure. The model is then used to study demographic change in a small open economy of Finland. The simulations highlight a key role played by labour market imperfections in determining a fiscal burden of ageing in defined benefit pensions systems. Higher labour market imperfections lead into considerably stronger responses of labour supply and taxes on ageing. Thus, imperfections magnify the problem associated with fiscal sustainability in ageing society. Higher labour market imperfections lead into considerably stronger responses of labour supply and taxes on ageing. Thus, imperfections magnify the problem associated with fiscal sustainability in ageing society. Stochastic simulations suggest that lengthening of working time has rather minor impact on alleviating the fiscal burden of ageing. Only a small fraction of the stochastic variation in endogenously determined contribution rate is explained by the stochastic variation in the lenght of working time. Variation in fertility rate is clearly more important.
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Find related papers by JEL classification: E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy E27 - Macroeconomics and Monetary Economics - - Macroeconomics: Consumption, Saving, Production, Employment, and Investment - - - Forecasting and Simulation H55 - Public Economics - - National Government Expenditures and Related Policies - - - Social Security and Public Pensions
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