Below are datasets which I find useful and often recommend to fellow researchers and students:
Occupational Licensing
Bureau of Labor Statistics, Current Population Survey: Data on certifications and licenses ( 2015 - )
National time series survey data on whether respondents are required to have a license or certificate to do their job
Institute for Justice, License to Work: 2022 Report | 2017 Report | 2012 Report
State-level licensing requirements for 102 low to middle-income occupations across the U.S.
Institute for Justice, Too Many Licenses: Sunrise Review Report Database
Data on sunrise review reports by state, year, occupation, recommendation, and outcome.
Knee Center for the Study of Occupational Regulation: Occupational Regulation Database
State licensing data, including licensing applications; includes data on continuing education, reciprocity, and good moral character requirements
Knee Center for the Study of Occupational Regulation: Police Officer Licensing
State licensing data for the minimum licensing requirements for police officers, including higher education requirements and weeks of training
Knee Center for the Study of Occupational Regulation: Universal Licensing Recognition | ICPSR
State licensing data for the passage of universal licensing recognition bills, with details on the content of the bills, passage dates, and dates they were in effect.
Mercatus Center QuantGov: Occupational Licensing RegData 1.0 (2020)
State-level data for the text of licensing requirements
National Conference of State Legislatures: The National Occupational Licensing Database
State-level licensing requirements for 48 occupations licensed in 30+ states; includes data on renewals, reciprocity and good moral character requirements
National time series survey data on whether respondents are required to have a license or certificate to do their job
Institute for Justice, License to Work: 2022 Report | 2017 Report | 2012 Report
State-level licensing requirements for 102 low to middle-income occupations across the U.S.
Institute for Justice, Too Many Licenses: Sunrise Review Report Database
Data on sunrise review reports by state, year, occupation, recommendation, and outcome.
Knee Center for the Study of Occupational Regulation: Occupational Regulation Database
State licensing data, including licensing applications; includes data on continuing education, reciprocity, and good moral character requirements
Knee Center for the Study of Occupational Regulation: Police Officer Licensing
State licensing data for the minimum licensing requirements for police officers, including higher education requirements and weeks of training
Knee Center for the Study of Occupational Regulation: Universal Licensing Recognition | ICPSR
State licensing data for the passage of universal licensing recognition bills, with details on the content of the bills, passage dates, and dates they were in effect.
Mercatus Center QuantGov: Occupational Licensing RegData 1.0 (2020)
State-level data for the text of licensing requirements
National Conference of State Legislatures: The National Occupational Licensing Database
State-level licensing requirements for 48 occupations licensed in 30+ states; includes data on renewals, reciprocity and good moral character requirements