| Value | Category |
|---|---|
| 00 | Professions, technicians, and similar workers |
| 01 | Managers, administrators and directive officials, except in agriculture |
| 02 | Office workers and similar workers |
| 03 | Salesmen and similar |
| 04 | Farmers, ranchers, lumber workers, fishermen, hunters and similar workers |
| 05 | Workers in metal and non-metal mines, in petroleum and natural gas wells, and in quarries, salt mines, etc. |
| 06 | Artisans and workers directly involved in production processes and conductors in the transportation industry |
| 07 | Artisans and workers directly involved in production processes and conductors in the transportation industry |
| 08 | Manual laborers in occupations not directly related to production |
| 09 | Service workers and similar |
| 99 | No occupation reported |