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 revised labor force numbers from 2008 to 2012 and revised industry employment data from 1990 to 2012 will be released on March 22, 2013, along with the release of the January 2013 data. For a complete list of release schedules please visit Data Release Schedule.
In 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. Beginning this year, the LMID along with the BLS, will publish additional subsectors in some industries. However, some industry sectors and their related subsectors still may not be additive. The change in our practices conforms to the BLS publication standards.