Sources and footnotes for tables



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 
Economic Analysis.

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 1.5 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 second quarter of 2014.

			      Table Footnotes
			      
(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 1978-2013 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 
places.

(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.

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Last Modified Date: November 06, 2014