| Value | Category |
|---|---|
| 0 | none |
| 1 | managers |
| 2 | professionals |
| 3 | technicians and associate professionals |
| 4 | clerical support workers |
| 5 | service workers |
| 6 | sales workers |
| 7 | skilled agricultural, forestry and fishery workers |
| 8 | construction, craft and related trades workers |
| 9 | drivers, plant and machine operators, and assemblers |
| 10 | elementary occupations |
| 888996 | none |
| 888997 | do not know |
| 888998 | refusal |
| 888999 | miss |