The paper I wrote with Matt Dey, using internal BLS microdata to describe concentrated labor markets in the United States from 2003 to 2018, has now been published at Industrial Relations and our market-level concentration measures have been posted for others to use. 1/14

We use the microdata of the Occupational Employment and Wage Statistics (OEWS) and the Quarterly Census of Employment and Wages (QCEW) to estimate employment and wages by employer for 458 aggregated occupations in every Metropolitan Statistical Area (MSA) in the United States. 2/14