Vieillissement et richesse des nations

We examine the consequences of aging on wealth accumulation and growth in a simple overlapping-generations model. We show that, for some given sets of pension rules, aging is always beneficial for growth and development: lengthening the retirement period provides an incentive for saving more, which is always favorable to future generations. Only in the case of a marked increase in the weight of the pay-as-you-go pension system is wealth accumulation reduced and growth lower. We also discuss the utility gains associated to aging, its incidence on labor supply and the fairness of pension rules.JEL codes : D91, H55, D91.