| Value | Category |
|---|---|
| 01 | Employed in a socialized unit |
| 02 | Employed in a non-socialized unit |
| 03 | Franchise older |
| 04 | Cottage worker |
| 05 | Member of the production society |
| 06 | Farmer |
| 07 | Self-employed |
| 08 | Helping on a farm or in a family business |
| 98 | Unknown or no secondary work |
| 99 | NIU (not in universe) |