| Value | Category |
|---|---|
| 1 | In an enterprise/institution - With a written contract |
| 2 | In an enterprise/institution - Without a written contract |
| 3 | In a shop - With a written contract |
| 4 | In a shop - Without a written contract |
| 5 | Other - With a written contract |
| 6 | Other - Without a written contract |
| Sysmiss |