| Value | Category |
|---|---|
| -9 | Don't know (spontaneous) |
| 1 | A government or government agencies, including state-owned enterprises |
| 2 | This establishment’s parent company or affiliated subsidiaries |
| 3 | Private firms, excluding this establishment’s parent company or affiliated subsidiaries, with 150 employees or more |
| 4 | Private firms, excluding this establishment’s parent company or affiliated subsidiaries, with less than 150 employees |
| 5 | Other |
| Sysmiss |