| Value | Category |
|---|---|
| 1 | Manager 10 or more employees |
| 2 | Manager less than 10 employees |
| 3 | Professional |
| 4 | Supervisor |
| 5 | Non-manual worker |
| 6 | Foreman |
| 7 | Skilled |
| 8 | Semi-skilled |
| 9 | Unskilled |
| 10 | Farmer |
| 11 | Agricultural worker |
| 12 | Armed forces |
| -4 | Not asked |
| -3 | Not applicable |
| -2 | No answer |