Using 17 measures of job quality from the 1980 Census, the Current Population Survey, and the Dictionary of Occupational Titles, the authors perform a cluster analysis that groups 621 jobs covering 94% of the work force into six job categories (termed "contours"), a job classification closely...

Using new measures of job skills and standard measures of education and earnings, the authors examine the effects of changing occupational and industry employment patterns on the skill composition of work between 1960 and 1985. The results show a strong upgrading of cognitive and interactive...