Occupational Safety and Health Changes to OIICS, NAICS and SOC
In September 2010, the Bureau of Labor Statistics completed a major revision to the Occupational Injury and Illness Classification
System (OIICS). The revised OIICS structure (OIICS 2.01) will be used beginning with reference year 2011 for both the Census of Fatal
Occupational Injuries (CFOI) and the Survey of Occupational Injuries and Illnesses (SOII) programs. Because of the extensive revisions,
data for the OIICS case characteristics for reference year 2011 represent a break in series with data for prior years. More information
on OIICS can be found here: www.bls.gov/iif/oshoiics.htm. As a result of the
break in series, new survey ID’s have been created for the public IIF databases
(www.bls.gov/iif/data.htm) for CFOI and SOII.
The Standard Occupational Classification (SOC) system is used to classify occupations
for both CFOI and SOII. Beginning with reference year 2011, a revised version of the SOC system will be used to classify occupations.
While the changes to the new structure (SOC 2010) were not extensive, comparisons of SOC 2000 and SOC 2010 occupations should be made
with caution. More information on the 2010 SOC, including an overview of new items in SOC 2010, can be found
here: www.bls.gov/soc/home.htm.
The North American Industry Classification System (NAICS) is used to classify industry
for both CFOI and SOII. For reference year 2014, the CFOI and SOII programs will adopt a revised industry classification system, NAICS 2012,
which will represent a break in series. More information NAICS can be found here: www.bls.gov/bls/naics.htm.
For more information on the different coding structures used and the years to which they apply, please see the BLS Handbook of Methods at
www.bls.gov/opub/hom/homch9.htm.
Last Modified Date: July 31, 2012
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