What are the sectors?

Sector definitions follow the North American Industry Classification System (NAICS), which has replaced the U.S. Standard Industrial Classification (SIC) system. More information about NAICS can be found on the U.S. Census Bureau North American Industry Classification System pageExternal. NAICS provides definitions for 20 sectorsExternalwhich NIOSH aggregated into ten sector groups as follows:

NORA Sector Group NAICS Code
Agriculture, Forestry & Fishing (except Wildland Firefighting and including seafood processing) 11,External 311710External
Construction 23External
Healthcare & Social Assistance (including Veterinary Medicine/Animal Care) 62External, 54194External, 81291External
Manufacturing (except seafood processing) 31-33External
Mining (except Oil and Gas Extraction) 21External
Oil and Gas Extraction 211External, 213111External & 213112External
Public Safety (including Wildland Firefighting) 92212External, 92214External, 92216External & 62191External
Services (except Public Safety and Veterinary Medicine/Animal Care) 51External, 52External, 53External, 54External, 55External, 56External, 61External, 71External, 72External, 81External & 92External
Transportation, Warehousing & Utilities 48-49External & 22External
Wholesale and Retail Trade 42External & 44-45External

More information about NIOSH’s work in each sector can be accessed through the NIOSH Program Portfolio page .

Page last reviewed: March 28, 2018