Technical notes



				TECHNICAL NOTES 

Labor Hours

Hours data for the labor productivity and cost measures include hours worked
for all persons working in the sector-wage and salary workers, the self-
employed and unpaid family workers. The primary source of hours and 
employment data is the BLS Current Employment Statistics (CES) program, which
provides monthly survey data on the number of jobs held by wage and salary
workers in nonfarm establishments, counting a person who is employed by two 
or more establishments at each place of employment. The CES also provides
average weekly paid hours of production and nonsupervisory workers in these
establishments. Weekly paid hours are adjusted to hours at work using data
from the National Compensation Survey (NCS) for 2001 forward and data from 
the BLS Hours at Work survey, conducted for this purpose, for earlier years. 
The Office of Productivity and Technology estimates average weekly hours at
work for nonproduction and supervisory workers using information from the 
Current Population Survey (CPS), the CES, and the NCS.

Data from the CPS are used to estimate hours worked for farm labor, nonfarm 
proprietors, and nonfarm unpaid family workers. Using CPS information on 
employment and hours worked at primary jobs and all other jobs, separately, 
the BLS productivity measures assign all hours worked to the correct 
industrial sector. Hours for government enterprises are derived from the CPS,
the CES, and the National Income and Product Accounts (NIPA) prepared by the 
Bureau of Economic Analysis (BEA) of the Department of Commerce.

Output

Business sector output is a chain-type, current-weighted index constructed 
after excluding from gross domestic product (GDP) the following outputs: 
general government, nonprofit institutions, and private households (including
owner-occupied housing). Corresponding exclusions also are made in labor
inputs. Business output accounted for about 76 percent of the value of GDP in 
2015. Nonfarm business, which excludes farming, accounted for about 75 
percent of GDP in 2015.

Annual indexes for manufacturing and its durable and nondurable goods 
components are constructed by deflating current-dollar industry value of 
production data from the U.S. Bureau of the Census with deflators from the
BLS. These deflators are based on data from the BLS producer price program
and other sources. The industry shipments are aggregated using annual 
weights, and intrasector transactions are removed. Quarterly manufacturing
output measures are based on the indexes of industrial production prepared
monthly by the Board of Governors of the Federal Reserve System, adjusted to
be consistent with annual indexes of manufacturing sector output prepared by 
BLS. 

Nonfinancial corporate output is a chain-type, current-weighted index 
calculated on the basis of the costs incurred and the incomes earned from 
production.  The output measure excludes the following outputs from GDP: 
general government; nonprofit institutions; private households; 
unincorporated business; and those corporations classified as offices of bank 
holding companies, offices of other holding companies, or offices in the 
finance and insurance sector. Nonfinancial corporations accounted for about 
50 percent of the value of GDP in 2015.
     
Labor Productivity

The measure describes the relationship between real output and the labor time 
involved in its production. Measures of labor productivity growth show the 
changes from period to period in the amount of goods and services produced 
per hour worked. They reflect the joint effects of many influences, including 
changes in technology; capital investment; level of output; utilization of
capacity, energy, and materials; the organization of production; managerial
skill; and the characteristics and effort of the work force.

Labor Compensation

The measure includes accrued wages and salaries, supplements, employer 
contributions to employee benefit plans, and taxes. Estimates of labor 
compensation by major sector, required for measures of hourly compensation
and unit labor costs, are based primarily on employee compensation data from
the NIPA, prepared by the BEA. The compensation of employees in general 
government, nonprofit institutions and private households are subtracted from
compensation of domestic employees to derive employee compensation for the
business sector. The labor compensation of proprietors cannot be explicitly
identified and must be estimated. This is done by assuming that proprietors
have the same hourly compensation as employees in the same sector. The 
quarterly labor productivity and cost measures do not contain estimates of
compensation for unpaid family workers.  
      
Unit Labor Costs

These measures describe the relationship between compensation per hour and
labor productivity, or real output per hour, and can be used as an indicator
of inflationary pressure on producers. Increases in hourly compensation 
increase unit labor costs; labor productivity increases offset compensation 
increases and lower unit labor costs. 

Presentation of the data

The quarterly data in this release are presented in three ways: as percent 
changes from the previous quarter presented at a compound annual rate, as
percent changes from the corresponding quarter of the previous year, and as
index number series where 2009=100. Annual data are presented both as index
number series and percent changes from the previous year.  

The index numbers and rates of change reported in the productivity and costs
news release are rounded to one decimal place. All percent changes in this 
release and on the BLS web site are calculated using index numbers to three
decimal places. A complete historical series of these index numbers are 
available at the BLS web site, www.bls.gov/data/home.htm, or by contacting 
the BLS Division of Major Sector Productivity (Telephone 202-691-5606 or 
email dprweb@bls.gov).

For a more detailed explanation of methodology see "Technical Information 
About the Major Sector Productivity and Costs Methods" at 
www.bls.gov/lpc/lpcmethods.pdf.
      
Information in this release will be made available to sensory-impaired 
individuals upon request. Voice phone: 202-691-5606; Federal Relay Service
number: 1-800-877-8339.




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Last Modified Date: May 04, 2016