Updated
Occupations beginning with O
34 of the 1,410 occupations with a page here, 2.4% of them. The busiest is Operations Research Analysts with 1,183 filings; the smallest carry 1. Every name is DOL's own spelling from the disclosure files.
All 34, alphabetically
Each number is the PERM cases DOL's current files record for that occupation.
- Obstetricians and Gynecologists 37
- Obstetricians and Gynecologists 3
- Occupational Health and Safety Specialists 59
- Occupational Health and Safety Specialists 7
- Occupational Health and Safety Specialists 1
- Occupational Health and Safety Technicians 5
- Occupational Therapists 105
- Occupational Therapists 9
- Occupational Therapy Aides 1
- Occupational Therapy Assistants 1
- Office and Administrative Support Workers, All Other 15
- Office Clerks, General 465
- Office Manager 4
- Office Services Specialist 131
- Online Merchants 9
- Operating Engineers and Other Construction Equipment Operators 43
- Operations Research Analysts 1,183
- Ophthalmic Medical Technicians 6
- Ophthalmic Medical Technologists 2
- Ophthalmologists, Except Pediatric 8
- OPOXY FLOOR INSTALLER 2
- Opticians, Dispensing 4
- Optometrist 4
- Optometrists 31
- Oral and Maxillofacial Surgeons 9
- Oral and Maxillofacial Surgeons 1
- Order Clerks 48
- Order Clerks 16
- Orderlies 15
- Orthodontists 21
- Orthodontists 2
- Orthopedic Surgeons, Except Pediatric 13
- Orthotists and Prosthetists 8
- Outdoor Power Equipment and Other Small Engine Mechanics 9
Looking for one in particular?
The ranked table searches every occupation in the corpus, including the ones too small for a page of their own.
Holding a case number?
A case lookup reads DOL's live record for one case, which is a different and fresher source than the counts on this page.
Employers and firms: Derived from the disclosure corpus · data through Aug 26, 2026 · rebuilt with each quarterly ingest
Case data: DOL quarterly disclosure files (flag.dol.gov) · data through Jun 30, 2026 · quarterly
What each source includes
Employers and firms: Employers, law firms and occupations ranked from decided cases only.
Case data: Decided PERM cases only. A case still waiting isn't in here, so counts and durations describe finished cases.
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Waiting on a PERM case?
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- An email when DOL moves it