Local and national concentration trends in jobs and sales: the role of structural transformation

Autor, David, Patterson, Christina and Van Reenen, John ORCID: 0000-0001-9153-2907 (2023) Local and national concentration trends in jobs and sales: the role of structural transformation. CEP Discussion Papers (CEPDP1916). London School of Economics and Political Science. Centre for Economic Performance, London, UK.

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Abstract

National U.S. industrial concentration rose between 1992-2017. Simultaneously, the Herfindhahl Index of local (six-digit-NAICS by county) employment concentration fell. This divergence between national and local employment concentration is due to structural transformation. Both sales and employment concentration rose within industry-by-county cells. But activity shifted from concentrated Manufacturing towards relatively un-concentrated Services. A stronger between-sector shift in employment relative to sales explains the fall in local employment concentration. Had sectoral employment shares remained at their 1992 levels, average local employment concentration would have risen by 9% by 2017 rather than falling by 7%.

Item Type:	Monograph (Discussion Paper)
Official URL:	https://cep.lse.ac.uk/_new/publications/discussion...
Additional Information:	© 2023 The Author(s)
Divisions:	Economics
Subjects:	H Social Sciences > HC Economic History and Conditions H Social Sciences > HD Industries. Land use. Labor
JEL classification:	L - Industrial Organization > L1 - Market Structure, Firm Strategy, and Market Performance > L11 - Production, Pricing, and Market Structure; Size Distribution of Firms L - Industrial Organization > L6 - Industry Studies: Manufacturing > L60 - General O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development > O31 - Innovation and Invention: Processes and Incentives O - Economic Development, Technological Change, and Growth > O3 - Technological Change; Research and Development > O34 - Intellectual Property Rights: National and International Issues P - Economic Systems > P3 - Socialist Institutions and Their Transitions > P33 - International Trade, Finance, Investment, and Aid R - Urban, Rural, and Regional Economics > R3 - Production Analysis and Firm Location
Date Deposited:	24 Jan 2024 00:04
Last Modified:	11 Sep 2025 05:14
URI:	http://eprints.lse.ac.uk/id/eprint/121333

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