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Journal of Political Economy Vol. 133 No. 7 2025

More Laws, More Growth? Evidence from US States

Elliott Ash1; Massimo Morelli1,2; Matia Vannoni3

1 Economic Policy Institute · 2 Luxembourg Institute of Socio-Economic Research · 3 King's College London

open access

Abstract

This paper analyzes the conditions under which more legislation contributes to economic growth. In the context of US states, we apply natural language processing tools to measure legislative flows for the years 1965–2012. We implement a novel shift-share design for text data, where the instrument for legislation is leave-one-out legal topic flows interacted with pretreatment legal topic shares. We find that at the margin, higher legislative output causes more economic growth. Consistent with more complete laws reducing ex post holdup, we find that the effect is driven by the use of contingent clauses, is largest in sectors with high relationship-specific investments, and is increasing with local economic uncertainty.

DOI
10.1086/734874
Volume
133
Issue
7
Pages
2139-2179
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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