Subcontractor Safety Management: The GC's Complete Guide
On a typical commercial construction project, the general contractor (GC) manages 10-30 subcontractors. Each brings their own chemicals, workers, and safety programs. Under OSHA's multi-employer worksite policy, the GC can be cited for subcontractor safety violations—even if the GC's own employees weren't involved.
Managing subcontractor safety with phone calls, emails, and paper binders is a recipe for citations. HazComFast gives GCs a digital system to verify, track, and document subcontractor compliance.
OSHA's Multi-Employer Worksite Policy
OSHA classifies employers on multi-employer worksites into four categories:
| Role | Definition | Liability |
|---|---|---|
| Creating employer | Created the hazard | Directly citable |
| Exposing employer | Workers exposed to the hazard | Directly citable |
| Correcting employer | Responsible for correcting the hazard | Citable if they fail to correct |
| Controlling employer | Has general supervisory authority | Citable if they fail to exercise reasonable care |
GCs are almost always classified as controlling employers. This means you're liable if you fail to exercise reasonable care in ensuring subcontractor safety—including HazCom compliance.
The Subcontractor HazCom Problem
What Goes Wrong
- Unknown chemicals — Subs bring chemicals to the jobsite without notifying the GC
- Missing SDSs — Sub's chemical inventory isn't shared or doesn't match what's on site
- Training gaps — Sub workers aren't trained on chemicals other trades brought to the jobsite
- Label failures — Secondary containers without proper GHS labels
- No documentation — When OSHA cites the GC, there's no evidence of sub oversight
The Real Cost
OSHA can cite the GC for each subcontractor's HazCom violations as a controlling employer. With 15 subs on a project and a single chemical inventory gap per sub, that's potentially 15 separate citations at $16,550 each = $248,250.
How HazComFast Manages Subcontractors
1. Pre-Qualification
Before a sub starts work, require them to:
- Upload their written HazCom program
- Submit their complete chemical list for the project
- Provide SDSs for every chemical they'll bring on site
- Show training records for all workers assigned to the project
HazComFast tracks submission status and flags incomplete submissions.
2. Chemical Coordination
When a sub submits their chemical list:
- HazComFast adds their chemicals to the jobsite master inventory
- Compatibility checks run automatically against other subs' chemicals
- Workers from all trades are notified of new chemicals on the jobsite
- SDS gap analysis identifies missing safety data sheets
3. RFI Automation
Need an SDS from a subcontractor? Use the Subcontractor RFI Writer to generate a formal request with:
- Specific chemicals requested
- Regulatory basis for the request (29 CFR 1926.59)
- Response deadline
- Automated follow-up reminders
4. Training Verification
For each sub's workers:
- Verify HazCom training dates and content
- Check that training covers all chemicals on the multi-employer site
- Flag workers who haven't been trained on chemicals from other trades
- Generate a training record for site-specific orientation
5. Ongoing Monitoring
Throughout the project:
- Dashboard shows each sub's compliance status (green/yellow/red)
- New chemical arrivals trigger automatic notification workflows
- Toolbox talks are generated for multi-trade chemical awareness
- Weekly compliance reports can be auto-generated
6. Documentation Trail
Every interaction with subcontractors is documented:
- RFIs sent and responses received
- Chemical lists submitted and approved
- Training records verified
- Compliance issues identified and corrective actions issued
- All timestamps and attributions in the audit log
Pre-Job Safety Conference Checklist
Use this checklist (available as a digital form in HazComFast) for every subcontractor:
- Written HazCom program on file
- Chemical list submitted and complete
- SDSs provided for all listed chemicals
- Workers' HazCom training current
- Secondary container labeling plan confirmed
- Emergency contact information provided
- Site-specific hazard orientation completed
- Chemical compatibility review completed
- Storage location assignments confirmed
Getting Started
Subcontractor management is included in Professional and Enterprise plans. See pricing →
FAQ
Can subcontractors use HazComFast too?
Yes. You can invite subcontractors to join HazComFast with limited access to their specific jobsite data. This creates a shared compliance workspace.
What if a subcontractor refuses to provide SDSs?
Document every request and refusal in HazComFast. This creates evidence that you exercised reasonable care as a controlling employer—which is your defense if OSHA cites you for the sub's non-compliance.
How does multi-employer chemical inventory work?
Each subcontractor's chemicals are tagged to their company within the jobsite master inventory. The GC sees the complete picture; each sub sees only their own chemicals plus a shared notification when new hazards are introduced by other trades.