Subcontractor safety: agree the shared-work responsibilities
A siding crew changes a scaffold guardrail arrangement for access. The affected next trade was not told, and the general contractor’s file only contains the subcontractor’s generic safety policy.
A policy in the procurement folder cannot describe every shared-work condition. Before the subcontractor starts, establish what its scope involves, how it affects others and which responsible people exchange information. Keep each employer’s actual training and safety duties clear alongside the project’s coordination arrangements. When work changes, refresh that exchange. A signed generic acknowledgment does not establish that the current hazard or required instruction reached the affected crew.
Coordinate the scope before and during the work
- Review the actual work and resources. Receive the subcontractor’s scope, proposed activities, relevant competence and task-planning information through the appropriate process. Identify requirements that need qualified review rather than treating a company brochure as evidence. Record gaps that affect readiness. The assessment should match the work being hired, not simply count how many pages are attached.
- Name the responsible contacts and routes. Establish who receives site information, who supervises the subcontractor’s work and who resolves an interface. Confirm the actual arrangements for concerns, urgent hazards, changes and emergency communication. OSHA’s educational coordination guidance stresses information exchange between host employers and contractors. It does not transfer Canadian statutory duties or automatically give every manager the same contractual authority.
- Exchange the hazards that cross scope boundaries. Give the contractor current information about the area and other activities, and receive the hazards its work introduces. Establish the responsible coordinated arrangements before affected work proceeds. Keep the contractor’s worker training distinct from a general site induction. Ask how usable instructions reach the actual crew, including replacement personnel and people who need language support.
- Treat changes as a new receiving point. A different access method, crew or sequence may affect the agreed arrangement. Have the responsible personnel assess the change, implement the required controls and communicate them to others. Use the actual escalation and work-control procedure when there is a concern. Do not invent a universal two-warning rule, automatic backcharge or permission to continue with unresolved protection.
Common mistakes
- Using the generic policy as the complete scope readiness check.
- Assuming site induction supplies all task training.
- Allowing a changed arrangement to reach another trade without review and communication.
Checklist
Keep the subcontractor interface current
- Actual scope and readiness evidence.
- Responsible contacts and escalation route.
- Shared hazards and received coordination.
- Employer training and supervision responsibilities clear.
- Changes reviewed and affected crews informed.
Check your understanding
The subcontractor signed the site induction last week. Does that cover a changed access method today?
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