| Variable percentage | |
| Gender |
|
| male | 25.6 |
| Female | 74.4 |
| Age 21 - 29 years | 26.6 |
| 30 - 39 years | 50.5 |
| More than 40 years | 23 |
| marital status |
|
| single | 43.6 |
| Married | 56.4 |
| Work experience |
|
| lower than 5 years | 28.9 |
| 5 - 10 years | 33.1 |
| Over than 10 years | 38 |
| Educational level |
|
| diploma and associate’s degree | 10.5 |
| Bachelor’s degree | 81 |
| MA degree | 8.5 |
| Employment status |
|
| contractual or plan-based | 66.9 |
| Contractual | 18.7 |
| Formal | 14.4 |
| Shifts |
|
| constant morning | 27.2 |
| constant afternoon | 28.5 |
| constant evening | 44.3 |
| Work overtime |
|
| volunteer overtime | 76.4 |
| mandatory | 23.6 |
| second job |
|
| Yes | 31.3 |
| No | 68.8 |