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The purpose of this paper is to document the changes in low- and moderate-income occupational licensing over time.

Using US state level data, the authors document the rise in occupational licensing for low- and moderate-income occupations over the 1993-2012 period.

States averaged 32 additional low- and moderate-income occupations licensed over this period. Louisiana added the most licenses with 59 new licenses for these occupations, while Oklahoma and Kentucky only added 15 licenses for these low- and moderate-income occupations.

These data have not been documented before and should provide useful for future research into occupational licensing.