| Value | Category |
|---|---|
| 0 | not working |
| 1 | professional/technical/managerial |
| 2 | clerical |
| 3 | sales |
| 4 | agriculture - self employed |
| 5 | agriculture - unskilled |
| 6 | household and domestic |
| 7 | services |
| 8 | skilled manual |
| 9 | unskilled manual |
| 10 | domestic workers |
| 11 | agricultural unskilled |
| 98 | don't know |