Source: U.S. Bureau of Labor Statistics
Release: Productivity and Costs
Labor's share in current dollar output in a given sector is simply the ratio of labor compensation paid in that sector to current dollar output.
For more information, please go to http://www.bls.gov/news.release/pdf/prod2.pdf PRS85006172
U.S. Bureau of Labor Statistics, Nonfarm Business Sector: Labor Share [PRS85006172], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PRS85006172, September 25, 2018.