| Value | Category | Cases | |
|---|---|---|---|
| 0 | nr | 0 |
0%
|
| 1 | voluntary | 41 |
10.9%
|
| 2 | paid overtime | 32 |
8.5%
|
| 3 | part of main work | 216 |
57.6%
|
| 4 | an obligation without compensation | 73 |
19.5%
|
| 5 | other | 13 |
3.5%
|
| 9 | na | 0 |
0%
|
| Sysmiss | 2625 |