| Value | Category |
|---|---|
| 1 | 1. Daily contract/ agreement |
| 2 | 2. Less than one month |
| 3 | 3. 1 to less than 3 months |
| 4 | 4. 3 to less than 6 months |
| 5 | 5. 6 months to less than 12 months |
| 6 | 6. 12 months to less than 24 months |
| 7 | 7. Two years or more |
| 8 | 8. TNo specified duration |
| 9 | 9. Unspecified |