We develop a stylized EU-type model of a union consisting of rich, capital-abundant and high productivity countries, and poor, capital-scarce and low productivity countries. We address two main issues: the efficiency of tax competition and the effect of factor mobility on the size of the welfare...

This paper uses an overlapping generations model with international labor mobility and a politically responsive fiscal policy to examine aging in developed and developing regions. Migrant workers change the political structure composed of young and elderly voters in both labor-receiving and...

Living costs in Germany have surged since Russia's attack on Ukraine. In this article, we discuss pros and cons of different government policies to protect affected citizens. There is a vast domain of possible relief options, each coming with its own trade-offs and design pitfalls. Information...

This paper considers fiscal policy during the pandemic through the lens of optimal social insurance. We develop a simple framework to analyze how government taxes and transfers could mimic the insurance against pandemic income losses that people would like to have had. Permutations of the...

We show that the largest increase in unemployment benefits in U.S. history had large spending impacts and small job-finding impacts. This finding has three implications. First, increased benefits were important for explaining aggregate spending dynamics--but not employment dynamics--during the...

Using a human capital based growth model, we show the essential role of labor mobility and cross-country tax harmonization in equalizing income levels of countries that start off from different initial income positions. Knowledge spillovers cum labor mobility are the driving forces behind the...