| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, written contract | 81 |
1.6%
|
| 2 | Yes, oral contract | 343 |
6.9%
|
| 3 | No | 491 |
9.8%
|
| 98 | Don't know | 2 |
0%
|
| Missing value | 4090 |
81.7%
|