Concordances for SOC to NOC

Question

We have a researcher who needs to convert the 1991 SOC codes for occupations in the NPHS to NOC codes. I have not been able to find any direct concordance from 1991 SOC to the NOC. Have I missed something?

My searches have led me to conclude that this will actually involve two steps:

1 -- convert from the 1991 SOC to the 1980 SOC via 12F0028XDE

2 -- then convert from the 1980 SOC to the NOC 12F0029XDE

If there is a more direct method for doing this, I would appreciate being introduced to it!

Answer

There's a concordance on the DLI ftp side, in
/standard_classifications/concordance

As far as I can tell, the socnoce.xls and nocsoce.xls files are NOC to/from the 1991 SOC, and the soc1980_noc.txt and noc_soc1980.txt files are to/from the 1980 SOC.

Also, a tool from Standard Division will help the conversion from NOC to NOC-S. The following URL:
http://www.statcan.ca/english/Subjects/Standard/soc/2001/nocs01-index.htm explains the difference between NOC and NOC-S.

The tool helps map NOC and NOC-S at the unit group level for 2006. This should save researchers some time, but note that some adjustment will be required when applying this to older data due to changes in NOC-S over time. (2006 does not add or delete any unit groups from the 2001 version, though there are some changes in unit group titles).