BLS restricted data characteristics
BLS restricted data categories
Note: If you only require data from the public use files, you do not need to apply for access.
*Please note: A queue for new projects requiring OES restricted data access is in effect. See "Queues/Waiting Lists" below.
Special Data Considerations
BLS accepts only as many research projects for onsite access as resources (space, facilities, staff time, etc.) can accommodate. Depending on the demand for restricted data access and/or resource availability, BLS may institute a queue (activation of new projects occurs as current projects are completed) or a waiting list (activation of new projects on hold until further notice) for approved access to certain datasets.
SIC to NAICs Conversion
In 2002, the BLS transitioned from using the Standard Industrial Classification System (SIC) to the North American Industry Classification System (NAICS). Introduced in 1997, NAICS was the product of a collaborative effort between the United States, Canada, and Mexico. A classification system shared across the three countries allows direct comparison of economic data across borders in North America. NAICS codes are not related to SIC codes; rather NAICS is a completely redesigned way of coding industries. NAICS uses a six-digit hierarchical coding system to classify all economic activity into twenty industry sectors. This six-digit hierarchical structure allows greater coding flexibility than the four-digit structure of the SIC. BLS restricted historical data files for time periods before and including 2002 may be incomplete or unavailable. If you would like more information about available historical data for a particular dataset, please see the Contact BLS page. For more information about the NAICS conversion, NAICS codes, and the impact on BLS data, see https://www.bls.gov/bls/naics.htm
Last Modified Date: December 20, 2019