| Value | Category |
|---|---|
| 1 | Hourly contract / agreement |
| 2 | Daily contract/ agreement |
| 3 | Less than one month |
| 4 | 1 to less than 3 months |
| 5 | 3 to less than 6 months |
| 6 | 6 months to less than 12 months |
| 7 | 12 months to less than 24 months |
| 8 | Two years or more no specified duration |
| 9 | Unspecified |
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