This paper derives the optimal pension and tax parameters in a society where individuals differ in two characteristics: rationality and productivity. Rational agents, if not liquidity constrained, smooth consumption over their life-cycle. Myopic agents, by contrast, have ex ante a strong...

In Europe there are countries whose welfare system is more in the tradition of Beveridge (based on universal flat benefits) and others whose system is mainly Bismarkian (based on benefits related to past contributions).Labor mobility across different countries raises concerns about the...