166 countries have some kind of public old age pension. What economic forces create and sustain old age Social Security as a public program? We document some of the internationally and historically common features of Social Security programs including explicit and implicit taxes on labor supply,...

Why are the old politically successful? We build a simple interest group model in which political pressure is time-intensive, showing that in the political competitive equilibrium each group lobbies for government policies that lower their own value of time but that the old do so to a greater...

The steady state and transitional dynamics of two-sector models of endogenous growth are analyzed in this paper. We describe necessary conditions for endogenous growth. The conditions allow us to reduce the dynamics of the solution to a system with one state-like and two control-like variables....

We propose a positive theory that is consistent with two important features of social security programs around the world: (1) they redistribute income from young to old and (2) they induce retirement. We construct a voting model that includes a "political campaign" or "debate" prior to the...

Estimates of democracy's effect on the public sector are obtained from comparisons of 142 countries over the years 1960-90. Based on three tenets of voting theory - that voting mutes policy preference intensity, political power is equally distributed in democracies, and the form of voting...

We argue that the relevant monetary decision for the majority of U.S. households is not the fraction of assets to be held in interest-bearing form, but whether to hold any such assets at all (we call this "the decision to adopt" the financial technology). We show that the key variable governing...

Estimates of democracy's effect on the public sector are obtained from comparisons of 142 countries over the years 1960-90. Based on three tenets of voting theory--that voting mutes policy preference intensity, political power is equally distributed in democracies, and the form of voting...