| Inhouse Employer | Central | Hotel | OE | SO | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Sengkang |
| Securus Pte Ltd | East | Condominium | SS | SS | Aljunied |
| Star Security Services | Island Wide | - | Security Mgt | SS | Kaki Bukit |
| Orchid Hotel Private Limited | Central | In-House | OM | Nil | Yishun |
| Eagle I Security Services Pte Ltd | Island Wide | - | SS | SS | Woodlands |
| Inhouse Employer | West | In-House | OM | SSO | Boon Lay |
| Securus Pte Ltd | Island Wide | - | OE | SO | - |
| Jasa Investigation & Security Services Pte Ltd | West | Industrial / Factory | SSO | SSO | Tuas Link |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | CSO | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Woodlands |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | Nil | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | OE | SSS | Ang Mo Kio |
| Star Security Services | Island Wide | - | Security Mgt | SS | Pioneer |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Hougang |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| TwinRock Global | Central | - | Security Mgt | SS | Hougang |
| Resorts World Sentosa | South | Commercial | SS | SSS | Dover |
| Jasa Investigation & Security Services Pte Ltd | East | Commercial | SO | SS | Pasir Ris |
| Labourtel Management Corporation Pte Ltd | East | Dormitory | CSO | CSO | Hougang |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| Certis Group | Island Wide | - | SSO | SS | Sengkang |
