| Abbreviation | Definition |
|---|---|
| OERF | OPT Employment Reporting Form |
| OESL | Offshore Employment Solutions Ltd |
| OEW | Office of Employee Wellness |
| OIEC | Office of Injured Employee Counsel |
| OIEI | Office of Injury and Employment Information |
| OKEP | Older Kansans Employment Program |
| OLBEU | Ontario Liquor Boards Employees' Union (Canada) |
| OLWD | Office of Learning and Workforce Development |
| OPEA | Oklahoma Public Employees Association |
| OPEC | Office of Public and Employee Communications |
| OPSEU | Ontario Public Service Employee Union |
| OPSEU | Ontario Public Service Employees Union |
| OSE | Orientation and Services for Employment |
| OSEA | Oregon School Employees Association |
| OSER | Office of State Employment Relations |
| OUC | Office of Unemployment Compensation |
| OWC | Online Workforce College |
| OWDS | Offender Workforce Development Specialists |
| OWEN | Older Workers Employment Network |
| OWER | Office of Workforce Effectiveness and Resources |