We study the optimal size of a pay-as-you-go social security program for an economy composed of both permanent-income and hand-to-mouth consumers. While previous work on this topic is framed within a two-period partial equilibrium setup, we study this issue in a life-cycle general equilibrium...

Human mortality data reveal that life expectancy in industrialized countries has been converging to a common value. Yet, significant variations in the distributions of adult life-table ages at death among some developed countries have also been observed. This paper, largely motivated by...

Contrary to the usual presumption that welfare in markets is maximized if consumers behave rationally, we show in a two-period overlapping generations model that there always exists an irrational consumption rule that can weakly improve upon the lifecycle/permanent-income rule in general...

Although rational consumers without bequest motives are better off investing exclusively with annuitized instruments in partial equilibrium, we demonstrate the welfare effect of annuitization is ambiguous in general equilibrium on account of pecuniary externalities. Absent institutional...

Some empirical studies firmly reveal that people tend to form overly pessimistic survival expectations for relatively less distant ages and overly optimistic survival expectations for relatively more distant ages. We incorporate this observation into a life-cycle continuous time...