| Value |
Category |
| 1 |
No contract |
| 2 |
Oral contract of unlimited duration |
| 3 |
Oral contract of limited duration between 12-36 months |
| 4 |
Oral contract of limited duration under 12 months |
| 5 |
Written contract of unlimited duration |
| 6 |
Written contract of limited duration between 13-36 months |
| 7 |
Written contract of limited durantion under 12 months |
| 8 |
Don't know |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.