Footnotes, Tables 1-4

Source: The Bureau of Labor Statistics (BLS) develops productivity measures
using output and compensation data published by the Bureau of Economic 
Analysis (BEA), hours data published by other BLS programs, and capital 
data supplied by BEA and U.S. Department of Agriculture. Also see Technical
Notes in this release.

(1)	The private business sector covers gross domestic product with 
	the exception of the output of general government, government 
	enterprises, non-profit institutions, the rental value of 
	owner-occupied real estate, and the output of paid employees of
	private households. The private nonfarm business sector further
	excludes farms but includes agricultural services.

(2)	Output per hour worked.

(3)	Output per combined units of labor input and capital services.

(4)	Gross domestic product originating in the sector, chained superlative
	index.

(5)	Index of hours worked of all persons including employees, proprietors,
	and unpaid family workers, classified by age, education, and gender. 
	This chained superlative index is computed by combining changes in 
	the hours of each age, education, and gender group weighted by each 
	group’s share of total wages. 

(6)	A measure of the flow of capital services used in the sector. 
	Capital services measure the services derived from the stock of
	physical assets and intellectual property products. 

(7)	The growth rates of labor input and capital services are combined 
	by weighting with their respective shares of current dollar costs as 
	weights, and aggregating into a chained superlative index.

(8)	Capital services per hour.