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Econometrica Vol. 90 No. 6 2022

Uneven Growth: Automation's Impact on Income and Wealth Inequality

Benjamin Moll1; Lukasz Rachel2; Pascual Restrepo3

1 Economics Department, London School of Economics and Political Science · 2 Economics Department, University College London · 3 Economics Department, Boston University

Abstract

The benefits of new technologies accrue not only to high‐skilled labor but also to owners of capital in the form of higher capital incomes. This increases inequality. To make this argument, we develop a tractable theory that links technology to the distribution of income and wealth—and not just that of wages—and use it to study the distributional effects of automation. We isolate a new theoretical mechanism: automation increases inequality by raising returns to wealth. The flip side of such return movements is that automation can lead to stagnant wages and, therefore, stagnant incomes at the bottom of the distribution. We use a multiasset model extension to confront differing empirical trends in returns to productive and safe assets and show that the relevant return measures have increased over time. Automation can account for part of the observed trends in income and wealth inequality.

DOI
10.3982/ecta19417
Volume
90
Issue
6
Pages
2645-2683
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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