Arguably the most important development in recent decades in US factor markets is the decline in the relative wage of the unskilled. By contrast, in Europe it is undoubtedly the rise and persistence of unemployment. Technology has been identified as a key reason for the rising US wage...

We consider trade between a flexible wage America and a rigid real wage Europe. In a benchmark case, a move from autarky to free trade doubles the European unemployment rate, while it raises the American unskilled wage to the high European level. Entry of the unskilled South to world markets...

One account of spatial concentration focuses on productivity advantages arising from market size. We investigate this for 40 regions of Japan. Our results identify important effects of a region’s own size, as well as cost linkages between producers and suppliers of inputs. Productivity links...

Globalization threatens "good jobs at good wages", according to overwhelming public sentiment. Yet professional discussion often rules out such concerns a priori. We instead offer a framework to interpret and address these concerns. We develop a model in which monopolistically competitive firms...