UH_OCC_B1 is a 4-digit numeric variable.
Codes found here.
Occupation of job last week - 1976-1982
These string values in the original data have been recoded as follows:
--- => -999 : Missing
- Those in the labor force or those not in the labor force, but have been within the last 5 years and in rotation 4 or 8, excluding those who never worked.
|1976 – 1982||X||X||-||X||X||X||X||X||X||X||X||X||X|