In many countries. social security is a large fraction of the government budget. Why is it, given that at any moment in time the number of recipients of social security benefits is smaller than the number of contributors? Kore generally, what determines the size of social security? To answer...

We present a model of endogenous institutional change that rationalizes reforms that have taken place in the context of economic crisis and drastic political change. Most of the reforms have been initiated by powerholders, even though they have ended worse off relative to the status quo. The...

Uniform tariffs have become increasingly popular in recent years, yet their economic rationale is not strong. We identify and evaluate three sets of reasons as to why governments may prefer tariff uniformity as a means of alleviating political motives for excessive protection. First, a...

Using data on state supreme court judges for the years 1947 through 1994, we find that judges selected by nonpartisan elections and judges selected by technocratic merit commissions produce higher-quality work than judges selected by partisan elections. Election-year pressure reduces work...

In this chapter we study dynamic incentive models in which risk sharing is endogenously limited by the presence of informational or enforcement frictions. We comprehensively overview one of the most important tools for the analysis such problems — the theory of recursive contracts. Recursive...

We study how political factors shape competition in the mobile telecommunication sector. We show that the way a government designs the rules of the game has an impact on concentration, competition, and prices. Pro-competition regulation reduces prices, but does not hurt quality of services or...

We propose a criterion of approximate incentive compatibility, strategy-proofness in the large (SP-L), and argue that it is a useful second-best to exact strategy-proofness (SP) for market design. Conceptually, SP-L requires that an agent who regards a mechanism's “prices” as exogenous to...

We are motivated by the unique migration experience of Israel of a supply-side shock triggering skilled immigration and the concurrent decline in welfare-state redistribution. This paper develops a model, which can provide an explanation for the mechanism through which a supply-side shock...

Will politics lead to over-building or under-building of transportation projects? In this paper, we develop a model of infrastructure policy in which politicians overdo things that have hidden costs and underperform tasks whose costs voters readily perceive. Consequently, national funding of...

We explore the political economy of trade and migration policies in several models of international trade. We show that in a Ricardian world, free trade and no international labor mobility is a Nash equilibrium outcome, but free trade and free international labor mobility is not. The result...