| Value | Category | 
|---|---|
| 00 | Less than one month | 
| 01 | 1 month | 
| 02 | 2 months | 
| 03 | 3 months | 
| 04 | 4 months | 
| 05 | 5 months | 
| 06 | 6 months | 
| 07 | 7 months | 
| 08 | 8 months | 
| 09 | 9 months | 
| 10 | 10 months | 
| 11 | 11 months | 
| 12 | 12 months | 
| 98 | Not reported/unknown | 
| 99 | NIU (not in universe) | 
| var_concept.title | Vocabulary | 
|---|---|
| Work Variables -- PERSON | IPUMS |