We propose several models in which an ascriptive characteristic generates earnings differentials and is sorted across sectors. The general approach shows how to distinguish the ultimate sources of labor-market returns to such characteristics; the specific example uses longitudinal data on a...

Major strands of recent macroeconomic theory hinge on the relation of workers' efforts to their wages, but there has been no direct general evidence on this relation. This study uses data from household surveys for 1975 and 1981 that include detailed time diaries to examine how changes in the...

Measuring market discrimination is extremely difficult except in the increasingly rare case where physical output measures allow direct measurement of productivity. We illustrate this point with evidence on elections to offices of the American Economic Association. Using a new technique to infer...

The modern concept of labor hoarding emerged in early 1960s, and soon became a standard part of mainstream economists' explanation of the working of labor markets. The concept represents the convergence of three important elements: an empirical finding that labor productivity was procyclical; a...