What Is the Multi-Employer Worksite Doctrine?
On construction sites with multiple contractors, OSHA doesn't just cite the employer whose workers are at risk. Under CPL 02-00-124 (the multi-employer citation policy), OSHA can issue citations to any employer that created, exposed workers to, was responsible for correcting, or had supervisory control over a hazard.
This means a general contractor can receive a serious citation — even if none of its own employees were anywhere near the violation.
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The 4 Employer Categories
1. Creating Employer
The employer that caused the hazardous condition. Example: A masonry sub leaves an unguarded floor opening after removing a temporary cover.
2. Exposing Employer
The employer whose employees are exposed to the hazard. This is the most straightforward — if your workers are at risk, you can be cited.
3. Correcting Employer
The employer responsible for correcting the hazard. Often designated by contract. Example: A scaffolding company contracted to erect and maintain scaffolds.
4. Controlling Employer
The employer with general supervisory authority over the worksite — typically the general contractor or construction manager. This category is the most contentious and most frequently litigated.
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How Controlling Employer Liability Works
OSHA holds controlling employers to a reasonable diligence standard. You don't need to discover every hazard instantly, but you must demonstrate:
1. Regular inspections of the worksite for safety hazards
2. Contract provisions requiring subcontractor compliance
3. Prompt corrective action when hazards are identified
4. Effective communication about safety requirements
5. Enforcement mechanisms when subs fail to comply
What "Reasonable Diligence" Looks Like
| Action | Documents It |
|--------|-------------|
| Weekly site safety walks | Inspection logs with dates, findings, corrective actions |
| Pre-const