CoChat
Sign Up
Cited by 6,205Labor market dynamics and wage inequalityDigital Economy and Work TransformationGlobal trade and economics

The Skill Content of Recent Technological Change: An Empirical Exploration

Autor, D. H., Levy, F., Murnane, R. J.·2003·The Quarterly Journal of Economics
DOI 10.1162/003355303322552801
Open this paper in CoChat — free account

Abstract

We apply an understanding of what computers do to study how computerization alters job skill demands. We argue that computer capital (1) substitutes for workers in performing cognitive and manual tasks that can be accomplished by following explicit rules; and (2) complements workers in performing nonroutine problem-solving and complex communications tasks. Provided that these tasks are imperfect substitutes, our model implies measurable changes in the composition of job tasks, which we explore using representative data on task input for 1960 to 1998. We find that within industries, occupations, and education groups, computerization is associated with reduced labor input of routine manual and routine cognitive tasks and increased labor input of nonroutine cognitive tasks. Translating task shifts into education demand, the model can explain 60 percent of the estimated relative demand shift favoring college labor during 1970 to 1998. Task changes within nominally identical occupations account for almost half of this impact.

Integrity signals

Registry

Crossref · 10.1162/003355303322552801

Cites

28 of 28 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Computerization has disproportionately affected routine jobs and increased the productivity of workers with complementary skills, contributing to wage inequality.

    “Consequently, computerization has had a disproportionate impact on jobs that involve routine tasks, such as data entry, bookkeeping, and assembly line work, and reducing demand for workers performing”

    From Generative AI at Work (2023) · cites this paper as Autor et al., 2003

  • SBTC theory holds that technological progress complements skilled workers by raising their relative productivity and replaces unskilled workers by automating their tasks.

    “The A canonical theory in this discourse is SBTC (Acemoglu 2002, Autor et al. 2003), which posits that technological progress complements skilled workers by boosting their relative productivity and substitutes unskilled workers by automating their tasks.”

    From Skill-Biased Technical Change, Again? Online Gig Platforms and Local Employment (2025) · cites this paper as Autor et al. 2003

  • Online gig platforms may improve operational efficiency by making middle-skilled workers obsolete when their tasks, such as scheduling and supervising, can be replaced by technology.

    “Online gig platforms might enhance operational efficiency by rendering incumbent middle-skilled workers obsolete when their tasks are replaceable by technology (Autor et al. 2003), such as scheduling and supervising services.”

    From Skill-Biased Technical Change, Again? Online Gig Platforms and Local Employment (2025) · cites this paper as Autor et al. 2003

  • Modern work on labor-saving technology builds on the task-based framework popularized by Autor et al. (2003), who argue that computers substituted workers in routine cognitive and manual roles but complemented non-routine and complex tasks, leading to structural changes to the composition of jobs in the US economy.

    “Modern work on labor-saving technology builds on the task-based framework popularized by Autor et al. (2003), who argue that computers substituted workers in routine cognitive and manual roles but complemented non-routine and complex tasks, leading to structural changes to the composition of jobs in the US economy.”

    From Labor Market Consequences of Generative AI: Early Evidence from Norway (2026) · cites this paper as Autor et al., 2003

  • The predominant impact on non-routine cognitive tasks deviates from the routinization hypothesis, which posited that ICT primarily automates routine, codifiable tasks performed by middle-wage workers.

    “This predominant impact on non-routine cognitive tasks deviates from the 'routinization hypothesis' (Autor et al., 2003), which posited that ICT primarily automates routine, codifiable tasks performed by middle-wage workers.”

    From Large language models at work in China’s labor market (2025) · cites this paper as Autor et al., 2003

Cites

Flagged first, then by citations

3 of the 31 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Related

Authors
Autor, D. H., Levy, F., & Murnane, R. J.
Affiliations
  • National Bureau of Economic Research (US)
  • Massachusetts Institute of Technology (US)
ORCID
Venue
The Quarterly Journal of Economics
Publisher
Oxford University Press (OUP)
Published
2003-11-01
Volume
118
Issue
4
Pages
1279-1333
ISSN
  • 0033-5533 (ISSN-L)
  • 1531-4650
DOI
10.1162/003355303322552801
OpenAlex
W2892380133
Cited by
6,205
References
31
Citations by year
2026: 806 · 2025: 619 · 2024: 562 · 2023: 544 · 2022: 482 · 2021: 472 · 2020: 426 · 2019: 388 · 2018: 350 · 2017: 236 · 2016: 249 · 2015: 184 · 2014: 166 · 2013: 135 · 2012: 111
FWCI
55.74
Type
journal article
Language
en
Open access
closed
Locations
  • The Quarterly Journal of Economics (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Social Sciences › Economics, Econometrics and Finance › Economics and Econometrics › Labor market dynamics and wage inequality
  • Social Sciences › Sociology and Political Science › Digital Economy and Work Transformation
  • Social Sciences › Economics, Econometrics and Finance › General Economics, Econometrics and Finance › Global trade and economics
Keywords
computerization, technological change, task composition, task substitution, task complementarity, educational demand, skill-biased technological change

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review