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Employment Cost Index

Employment Cost Index Technical Note

The Employment Cost Index (ECI) measures the change in the cost of labor, free from the influence of employment shifts among occupations and industries. For information on survey concepts, coverage, methods, nonresponse adjustment, and imputation see National Compensation Measures Handbook of Methods at

Sample size

For the most recent sample size, see the latest News Release.

Standard errors

To assist users in ascertaining the reliability of ECI series, standard errors of all current quarter not seasonally adjusted 3- and 12-month percent change series are also available, see and the database query tool at Standard errors provide users a measure of the precision of an estimate to ensure that it is within an acceptable range for their intended purpose.

Historical listings

Historical ECI data are available in (xlsx) format at The continuous occupational and industry series listing uses the Standard Industrial Classification (SIC) Manual and Occupational Classification System (OCS) series from 1975 through 2005 and the North American Industry Classification System (NAICS) and Standard Occupational Classification (SOC) from 2006 to the present. It provides the official series deemed continuous after the change in classification systems. For more information on the criteria used in defining continuous series, see the article published in the Monthly Labor Review at

Employer Costs for Employee Compensation data

The costs per hour worked of compensation components are published as part of the Employer Costs for Employee Compensation (ECEC) news release. The ECEC release dates are available at Historical ECEC data are available in xlsx format at Since the ECEC is calculated with current employment weights rather than the fixed weights used in computing the ECI, year-to-year changes in the cost levels usually differ from those in the ECI.

Fixed employment weights

For additional information on the use of fixed employment weights in computing the ECI, see Beginning with the December 2022 release, the ECI is introducing new employment weights, see

Additional information

Historical tables are available in (xlsx) format for constant dollar, current dollar, and continuous series, see ECI release dates are available on the release calendar at Subscribe to receive the BLS Economic News Release email at If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.