| Value | Category | Cases | |
|---|---|---|---|
| 1 | Written contract for a limited period | 16161 |
1.7%
|
| 2 | Written contract for unlimited period | 41355 |
4.4%
|
| 3 | Verbal agreement | 17984 |
1.9%
|
| 4 | No | 65621 |
7%
|
| 9 | Not stated | 87 |
0%
|
| Sysmiss | 799405 |