| Inhouse Employer | East | Country Club | SO | SO | Tampines |
| Inhouse Employer | Central | Country Club | OM | SO | Tampines |
| Inhouse Employer | Central | Country Club | OM | CSO | Boon Lay |
| Inhouse Employer | East | Country Club | SO | SSS | MacPherson |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Serangoon Gardens Country Club | Central | Country Club | SO | SO | Bedok |
| Inhouse Employer | Central | Country Club | OM | CSO | Bukit Batok |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Serangoon Gardens Country Club | Central | Country Club | SO | SO | Bedok |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Inhouse Employer | East | Country Club | SO | SO | Tampines |
| Inhouse Employer | Central | Country Club | OM | CSO | Sengkang |
| Inhouse Employer | East | Country Club | SO | SO | Bedok |
| Serangoon Gardens Country Club | Central | Country Club | SO | SO | Bedok |
| Inhouse Employer | Central | Country Club | OM | SS | Sengkang |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| Soverus Pte Ltd | Central | Data Centre | SSS | SSS | Woodlands |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Data Centre | SSO | CSO | Boon Lay |
| Force-One Security | North | Data Centre | SS | SO | Tampines East |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Pasir Ris |
| Force-One Security | North | Data Centre | OE | SSO | Marsiling |
| Excellent Security & Safety Pte Ltd | North | Data Centre | SO | SS | Buangkok |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SS | SS | MacPherson |
