Expectations,uncertainty and institutions. An application to the analysis of social security reforms

The aging process that many developed economies will face in the medium-term is leading to reforms in the public pensions systems in order to solve the potential financial unsustainability generated by the foreseeable increase in the expenditure in pension benefits (assuming that the current social security contributions and the eligibility conditions will remain unchanged). Neoclassical economics defends a radical reform of these systems, substituting the current pay-as-you-go (PAYGO) systems by funded systems. In this paper, using the Post-Keynesian theory as a theoretical framework, we provide an alternative reflection to that proposed by the neoclassical economics about the choice between the alternative pension systems. The focus of the paper is the advantages of the PAYGO pension systems to stabilize the expectations of future income.