Supervisor Due Diligence Checklist

What Is Due Diligence?

Due diligence means taking every reasonable precaution in the circumstances to protect the health and safety of workers. Under the OHSA, supervisors who demonstrate due diligence may avoid personal liability even if an incident occurs. This checklist helps supervisors document their daily and ongoing compliance activities.

Workplace Inspections

• Conduct regular scheduled inspections of the work area
• Document hazards identified and corrective actions taken
• Follow up to confirm hazards have been corrected
• Report unresolved hazards to management in writing

Worker Training and Competency

• Verify all workers are trained before assigning tasks
• Confirm equipment-specific training for all machinery operated
• Review training records and keep them up to date
• Conduct on-the-job observation to verify competency

Hazard Communication

• Brief workers on hazards at the start of each shift or new task
• Post required notices (OHSA poster, WHMIS labels, emergency contacts)
• Communicate updated procedures when work methods change
• Ensure WHMIS SDSs are accessible for all controlled products

Equipment and PPE

• Inspect equipment before use and document findings
• Remove and tag defective equipment out of service
• Ensure appropriate PPE is available and in good condition
• Enforce PPE use and address non-compliance immediately

Incident and Hazard Reporting

• Investigate all incidents, near misses, and hazard reports promptly
• Submit investigation reports within required timeframes
• Implement corrective actions and follow up to verify effectiveness
• Notify the JHSC of all incidents as required

Key Takeaway

Consistent documentation is essential. A supervisor who keeps thorough records of inspections, training, and corrective actions is far better positioned to demonstrate due diligence before the Ministry of Labour or in court.