Fertility and pension systems

A broad political economics literature explains the introduction and expansion of pension systems, but the effects caused by the endogenous reduction of fertility are typically disregarded, as the fertility choice is usually considered exogenous. This paper suggests a political model that takes into account these effects and analyzes the net effect of the reduction of fertility costs on the dimension of pension systems. Some stylized facts support an inverted-U development pattern: a continuous and progressive increase of the fertility cost, after inducing the introduction of pension systems, tends to reduce, \emph{ceteris paribus}, their political support