Empirical findings that minorities typically attain lower economic status than majorities and that relatively larger minorities perform worse than smaller ones pose a challenge to economics.To explain this scale puzzle, I model an economy where the society is bifurcated into two social groups...

In this paper, we argue that the reason why the United States prefer a lower level of employment protection than the European countries lies in the differences in gains and costs from geographical mobility.We present a model where labor migration and employment protection are both determined...

I introduce a microfounded model of campaign finance with office-seeking politicians, a continuum of voters, and a large number of heterogeneous lobbies. Lobbies make contributions to politicians according to a common agency framework. Politicians use contributions to finance their electoral...

We present an overlapping generations model with two families who can guarantee old age support either by intra-family transfers from child to parent or via a tax-financed public pension system encompassing both families.We derive the individually and family-specific optimal decisions and...