We model the optimal reaction of a public PAYG pension system to demographic shocks. We compare the ex-ante first best and second best solution of a Ramsey planner with full commitment to the outcome under simple third best rules that mimic the pension systems observed in the real world. The...

In der öffentlichen und politischen Debatte wird Zuwanderung als eine Möglichkeit diskutiert, das Problem der Alterung von Gesellschaften abzumildern. Gleichzeitig lassen sich zum Teil sehr starke Widerstände gegen Zuwanderung feststellen. In den letzten Jahren hat sich auch die Wissenschaft...

We ask whether a PAYG-financed social security system is welfare improving in an economy with idiosyncratic and aggregate risk. We argue that interactions between the two risks are important for this question. One is a direct interaction in the form of a countercyclical variance of idiosyncratic...

We ask whether a PAYG-financed social security system is welfare improving in an economy with idiosyncratic and aggregate risk. We argue that interactions between the two risks are important for this question. One is a direct interaction in the form of a countercyclical variance of idiosyncratic...