Consumption and risk sharing over the life cycle

A striking feature of U.S. data on income and consumption is that inequality increases with age. This paper asks if individual-specific earnings risk can provide a coherent explanation. We find that it can. We construct an overlapping generations general equilibrium model in which households face uninsurable earnings shocks over the course of their lifetimes. Earnings inequality is exogenous and is calibrated to match data from the U.S. Panel Study on Income Dynamics. Consumption inequality is endogenous and matches well data from the U.S. Consumer Expenditure Survey. The total risk households face is decomposed into that realized before entering the labor market and that realized throughout the working years. In welfare terms, the latter is found to be more important than the former.     

Corruption and competition for resources

An increasing share of world FDI is carried out by multinationals from developing countries. These investors may have objectives and constraints that differ from their developed country counterparts. In this paper we focus on differences in attitudes to corruption, and how these may shape the competition for the right to extract resources in a developing country context. We show how differences in the investors’ level of technology and differences in the host country government’s trade-off between bribes and taxes determine who wins the competition for the resource and the winning price. One finding is that competition from a bribe-willing investor may induce a bribe-averse investor to enter into corruption. Surprisingly, however, we also find that competition with a bribe-willing investor may induce the bribe-averse investor to increase its tax payments.     

Technology Sourcing and Strategic Foreign Direct Investment

Empirical evidence suggests that technological spillovers are limited by distance. The present paper investigates the implications of this observation for the investment decisions of a technologically leading and lagging firm, located in different countries. Technological spillovers may induce “technology sourcing” foreign direct investment by the less advanced firm, as it seeks to upgrade its technology. Our main result, however, is that there may be strong incentives for the leading firm to undertake strategic investment abroad in order to prevent technology sourcing by the lagging firm. We analyze how trade costs, the technology gap between firms, technological spillovers, and the ability of a firm to transfer technology between plants affect the two firms’ entry decisions.     

Democratic public good provision

This paper analyzes an overlapping generation model of redistribution and public good provision under repeated voting. Expenditures are financed through age-dependent taxation that distorts human capital investment. Taxes redistribute income both across skill groups and across generations. We focus on politico-economic Markov equilibria and contrast these with the Ramsey allocation under commitment. The model features indeterminate equilibria, with a key role of forward-looking strategic voting. Due to the lack of commitment to future policies, the tax burden may be on the wrong side of the dynamic Laffer curve. Moreover, restrictions on government policies can in some cases be welfare improving.