The Bureau of Labor Statistics (BLS) is "responsible for measuring labor market activity, working conditions, and price changes in the economy" (citation). It is part of the Department of Labor.
Information on this page about data collected by the BLS includes
For a full list of what the BLS measures, use the Subject Area Categories link.
Public domain image via Wikimedia Commons.
The BLS's Current Population Survey (CPS) measures a number of labor force participation indicators.