Department of Labor Seal photos representing the workforce - digital imagery© copyright 2001 photodisc, inc.
Department of Labor Seal www.osha.gov  [skip navigational links] Search    Advanced Search | A-Z Index
North American Industry Classification System (NAICS)

On January 1, 2003 OSHA began using the North American Industry Classification System (NAICS) for industry identification in its various data sets.

NAICS uses a six digit hierarchical coding system to classify all economic activity into twenty industry sectors. Five sectors are mainly goods-producing sectors and fifteen are entirely services-producing sectors. This six digit hierarchical structure allows greater coding flexibility than the four digit structure of the Standard Industrial Classification (SIC) system. NAICS allows for the identification of 1,170 industries compared to the 1,004 found in the SIC. For detailed information on the NAICS coding structure please visit the U.S. Census Bureau or search the NAICS by keyword.

The Standard Industrial Classification has been replaced by the North American Industry Classification System (NAICS), but several OSHA data sets are still available with SIC-based data. For information on the Standard Industrial Classification system, please visit Standard Industrial Classification (SIC) System Search.
 
Back to TopBack to Top www.osha.gov www.dol.gov

Contact Us | Freedom of Information Act | Customer Survey
Privacy and Security Statement | Disclaimers
Occupational Safety & Health Administration
200 Constitution Avenue, NW
Washington, DC 20210
Page last updated: 2008