This paper documents that virtually all of the growth in the skilled wage premium over the 1980’s in the United States was confined to metropolitan areas. Explanations for the growth in the skilled wage premium will therefore need to take location into account.

The income of the self-employed is often assumed to be understated in economic statistics. Debate exists about the extent of under-reporting and the resulting measures of the size of the underground economy. This paper refines a method developed by Pissarides and Weber (1989) and uses...