| Value | Category |
|---|---|
| 1 | Occupation coded from the relate string |
| 2 | Occupation coded from the relate string and from occupation as transcribed in the main form |
| 3 | Occupation coded from employer |
| 4 | Occupation coded from occupation as transcribed in the secondary form and from employer |
| 5 | Occupation coded from employer and from the relate string |
| 9 | Unknown |