The Productivity and Costs release on August 7, 2003,
will reflect the June 2003 benchmark revision to payroll
employment. Since employment is now reported on
a North American Industry Classification System (NAICS) basis,
all of the historical data will be revised.
Changes as a consequence of the move to
NAICS should not be significant since this release
carries data at high levels of aggregation.
Source: US. Bureau of Labor Statistics
Release: Productivity and Costs
US. Bureau of Labor Statistics, Nonfarm Business Sector: Unit Labor Cost [ULCNFB], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/ULCNFB/, July 6, 2015.