Each year, the Labor Market Information Division (LMID), in cooperation with the federal Bureau of Labor Statistics (BLS), revises historical industry employment, labor force, and hours and earnings data. The revision process, also called "benchmarking," produces updates to the data sets used to generate the monthly estimates. See "What is a Benchmark?
" for a description. The BLS has lead responsibility for revising the data for California and its metropolitan areas (Metropolitan Statistical Areas or Metropolitan Divisions). The LMID provides input to the BLS for these revisions and continues to produce data for counties and other non-metropolitan sub-state areas. These data are produced using the same methodology used to estimate data for all states.
The Current Employment Statistics (CES) historical time series has been reconstructed to incorporate revisions made in the North American Industry Classification System (NAICS) coding of the California In-Home Supportive Services (IHSS) program. Where IHSS was previously out of scope for the CES survey, beginning in the first quarter of 2013 IHSS employment and wage data has been moved to and will continue to be reported under Services for the Elderly and Persons with Disabilities
, pursuant to a determination by the BLS. This will result in an overall shift as the employment is added into the data series of the affected industries.
The industry data series affected (where applicable) are: Total, All Industries; Total Nonfarm; Total Private; Service Providing; Private Service Providing; Educational and Health Services; Health Care and Social Assistance; Social Assistance; and Individual and Family Services. All areas of the state have been revised.
The revised labor force numbers from 2009 to 2013 and revised industry employment data from 1990 to 2013 will be released on March 7, 2014, along with the release of the January 2014 data. For a complete list of release schedules please visit Data Release Schedule
n addition to the benchmark revisions, each year the BLS and the LMID review and modify the list of industries for which we publish data to ensure that published data are statistically valid and useful. This may cause a change in the number of published subsectors in some industries. Some industry sectors and their related subsectors may not be additive. The change in our practices conforms to the BLS’s publication standards.