The question whether agglomeration externalities arise either from specialization or diversification of economic activity has since long been a major topic in the analysis of factors determining economic growth. In this paper we analyze whether a more specialized or a more diverse skill...

Standard models suggest that adverse labor demand shocks will lead to bigger employment losses if institutional factors like minimum wages and trade unions prevent downward wage adjustments. Some economists have argued that this insight explains the contrast between the United States, where real...