The Skill Content of Recent Technological Change: An Empirical Exploration

60 Pages Posted: 8 Jun 2001  

David H. Autor

Massachusetts Institute of Technology (MIT) - Department of Economics; National Bureau of Economic Research (NBER); IZA Institute of Labor Economics

Frank S. Levy

Massachusetts Institute of Technology (MIT) - Department of Urban Studies & Planning

Richard J. Murnane

Harvard University - Graduate School of Education; National Bureau of Economic Research (NBER)

Multiple version iconThere are 2 versions of this paper

Date Written: September 2002

Abstract

We apply an understanding of what computers do-the execution of procedural or rules-based logic-to study how computer technology alters job skill demands. We contend that computer capital (1) substitutes for workers in carrying out a limited and well-defined set of cognitive and manual activities, those that can be accomplished by following explicit rules (what we term "routine tasks"); and (2) complements workers in accomplishing non-routine problem solving and communications tasks. Provided these tasks are imperfect substitutes, our model implies measurable changes in the content of work, which we explore using representative data on job task input over the period 1960 to 1998. We show that computerization is associated with reduced relative demand for labor input of routine manual and routine cognitive tasks and increased relative demand for non-routine cognitive tasks. Demand shifts are evident within detailed industries, within detailed occupations, and within education groups within industries. Translating changes in job task content into education demand, the sum of within-industry and within-occupation shifts can account for forty percent of the estimated relative demand shift favoring college versus non-college labor during 1970 to 1998. Changes in task content within nominally identical occupations account for the largest component of this impact.

Keywords: Technological Change, Inequality, Computerization, Labor Demand, Demand for Skill

JEL Classification: O30, J23, J31, E23

Suggested Citation

Autor, David H. and Levy, Frank S. and Murnane, Richard J., The Skill Content of Recent Technological Change: An Empirical Exploration (September 2002). MIT Dept. of Economics Working Paper No. 01-22. Available at SSRN: https://ssrn.com/abstract=272691 or http://dx.doi.org/10.2139/ssrn.272691

David H. Autor (Contact Author)

Massachusetts Institute of Technology (MIT) - Department of Economics ( email )

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Frank S. Levy

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Richard J. Murnane

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Harvard University - Graduate School of Education ( email )

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