| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, written contract for a limited period | 207 |
1.3%
|
| 2 | Yes, written contract for unlimited period | 714 |
4.6%
|
| 3 | Yes, group agreement | 39 |
0.3%
|
| 4 | Yes, verbal agreement | 1136 |
7.4%
|
| 5 | No | 1399 |
9.1%
|
| Sysmiss | 11885 |