Sources and footnotes for tables
Last Modified Date: May 06, 2015
SOURCES: Output data are from the Bureau of Economic Analysis and the Census
Bureau of the U.S. Department of Commerce; the Bureau of Labor Statistics,
U.S. Department of Labor; and the Federal Reserve Board. Hours and
compensation data are from the Bureau of Labor Statistics and the Bureau of
RELIABILITY: Productivity and cost measures are regularly revised as more
complete information becomes available. The measures are first published
within 40 days of the close of the reference period; revisions appear 30 days
later, and second revisions after an additional 60 days. In the business
sector, the third publication (second revision) of a quarterly index of
output per hour of all persons has differed from the initial value by between
–1.6 and 1.4 index points approximately 95 percent of the time. This
interval is based on the performance of this measure between the fourth
quarter of 1995 and the fourth quarter of 2014.
(1) Wages and salaries of employees plus employers' contributions for social
insurance and private benefit plans. Except for nonfinancial corporations,
where there are no self-employed, data also include an estimate of wages,
salaries, and supplemental payments for the self-employed.
(2) The change for recent quarters is based on the Consumer Price Index for
all urban consumers (CPI-U). The trend from 1978-2014 is based on the Consumer
Price Index research series (CPI-U-RS).
(3) Unit nonlabor payments include profits, consumption of fixed capital,
taxes on production and imports less subsidies, net interest and
miscellaneous payments, business current transfer payments, rental income of
persons, and the current surplus of government enterprises.
(4) Current dollar output divided by the output index.
(5) Quarterly changes: Percent change compounded at annual rate is
calculated using index numbers to three decimal places. Indexes published in
the news release are rounded to one decimal place for convenience. Annual
changes: Percent change is calculated using annual indexes to three decimal
(6) Unit nonlabor costs include consumption of fixed capital, taxes on
production and imports less subsidies, net interest and miscellaneous
payments, and business current transfer payments.
(7) Total unit costs are the sum of unit labor and nonlabor costs.
(8) Unit profits include corporate profits before tax with inventory
valuation and capital consumption adjustments.