| off-set machine operator | 3 | |
| office assistant | 1012 | |
| office attendant | 583 | |
| office coordinator | 2 | |
| office executive | 771 | |
| office manager | 19 | |
| office peon | 1 | |
| office secretary | 3 | |
| office superintendent | 122 | |
| officer | 93 | |
| offset machine minder | 5 | |
| ombudsman | 1 | |
| oncology | 8 | |
| online course administrator | 1 | |
| operation assistant | 1 | |
| operation theatre technician | 1 | |
| operations head | 2 | |
| operations management | 3 | |
| operations technician | 50 | |
| operator | 8 | |
| operator special grade | 1 | |
| ophthalmic assistant | 3 | |
| ophthalmologist | 2 | |
| ophthalmology | 4 | |
| optical worker | 47 | |