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...

We consider a two-period overlapping generations model in which individual voters differ by age and by productivity. In such a setting, a redistributive Pay-As-You-Go system is politically sustainable, even when the interest rate is larger than the rate of population growth. The workers with...