The aim of this paper is to analyze a particular demographic risk in pay-as-you-go (PAYG) pension funds. We focus on the influence of the demographic variable 'new entrants' and on its impact on the future evolution of the fund. The model adapts well to a closed pension fund which operates...

This paper outlines some of the arguments for and against the funding of public pensions, with a view to establishing whether there is an economic basis for judging funding to be superior to pay-as-you-go (PAYG). It is argued that funding does not have a clear advantage, and the case for a shift...

This paper uses stochastic simulations on calibrated models to assess the optimal degree of reliance on fun ded pensions and on a particular type of unfunded (PAYG) pension. Surprisingly little is known about the optimal split between funded and unfunded systems when there are sources of...