| Value | Category |
|---|---|
| 0 | Did not work |
| 1 | Professional/technical/managerial |
| 2 | Clerical |
| 3 | Not used - Sales included with services |
| 4 | Agricultural - self employed and employee |
| 5 | Not used - Agricultural - employee |
| 6 | Not used - Household and domestic |
| 7 | Services |
| 8 | Skilled manual |
| 9 | Unskilled manual |
| 10 | Other |
| 98 | Don't know |