In an analysis of the risk-sharing properties of different types of pension systems, we show that only fixed-fee pay-as-you-go (PAYG) pension systems can provide risk sharing for living individuals. Under some circumstances, however, other PAYG pension systems can enhance the expected welfare of...

We explore voluntary participation in pension arrangements. Individuals only participate when participation is more attractive than autarky. The benefit of participation is that risks can be shared with future generations. We apply our analysis to a pay-as-you-go system, a funded system without...

This Paper analyses the general equilibrium implications of reforming pay-as-you-go pension systems in an economy with heterogeneous agents, human capital investment and capital-skill complementarity. It shows that increasing funding in the long-run delivers higher physical and human capital and...

An unfunded Social Security system faces a major risk, sometimes referred to as ‘political risk’. In order to account properly for this risk, the paper considers a political process in which the support to the system is asked from each newborn generation. The analysis is conducted in an...

We assess the political support for parametric reforms of the Pay-As-You-Go pension system following a downward fertility shock. Using a continuous time overlapping generations model, we show that, for a large class of utility functions, the majority of the population favor a cut in pension...

It is shown that the net fiscal externality created by an additional member of a pay-as-you-go-pension system that is endowed with individual accounts equals the gross contributions of this member. In Germany, this equals about 175,000 Deutsche marks. The paper uses this information to design a...