In order to help in designing an accurate pension reform, we determine the optimal resource allocation in an endogenous fertility model generating a demographic transition. Extending Samuelson’s (1975) work in such a setting, we analyze the problem of the interiority of the optimal solution...

This paper investigates the problem of an "optimum population" concerning age structures in a 3-period OLG-model with endogenous fertility and longevity. The first-best solution for a number-dampened total social welfare function, including Millian and Benthamite utilitarianism as two extreme...

Very few studies have explored the optimality properties of the "standard model" of fertility where parents must determine their optimal trade-off between quality and quantity. The present paper works to fill that gap and find three main results. First, when there exist positive externalities in...

With an overlapping generations model, Williamson and Jones [1983] demonstrated that the long-run savings ratio in the U.S. was not affected by the introduction and the reform of the unfunded social security system. This paper extends their model by including a production sector, endogenous...

We study the effects of pension reform in a four-period OLG model for an open economy where hours worked by three active generations, education of the young, the retirement decision of older workers, and aggregate per capita growth, are endogenous. Next to the characteristics of the pension...

This paper re-examines the effects of population aging and pension reforms in an OLG model with labor market frictions. The most important feature brought about by labor market frictions is the connection between the interest rate and the unemployment rate. Exogenous shocks (such as aging)...

Nous considérons un modèle à générations imbriquées en économie fermée avec des travailleurs qualifiés et des travailleurs non qualifiés. Il existe un système de retraite obligatoire qui se décompose en deux branches : une branche avec financement par répartition, cotisations...

Dans un modèle à générations imbriquées avec production «à la Diamond», on introduit de l’incertitude sur la durée de vie. En comparaison la dynamique d’une économie sans système de retraite avec celle d’une économie disposant d’un système de retraite par capitalisation, on...