| Value | Category |
|---|---|
| 11 | Director |
| 12 | Higher management/engineer |
| 13 | Middle management |
| 14 | Qualified worker |
| 15 | Unqualified worker |
| 16 | Laborer |
| 21 | Business owner (small business) |
| 22 | Working for own account |
| 23 | Apprentice |
| 24 | Domestic aide |
| 96 | Other |
| 98 | Don't know/undetermined |