Recognizing Signs of Impairment Toolbox Talk

Workers in construction and industrial environments must be fit for duty to safely perform their assigned tasks. Impairment—regardless of its cause—can affect judgment, coordination, reaction time, concentration, and decision-making. Impairment may result from alcohol, illegal drugs, the misuse of prescription or over-the-counter medications, fatigue, illness, or other medical conditions. The focus should always be on identifying behaviors that create a safety risk, not on determining the cause of the impairment. When someone appears unable to work safely, immediate action is necessary to protect everyone on the jobsite.

This toolbox talk reviews common signs of impairment, worker responsibilities, and the importance of reporting safety concerns through established company procedures.

Why This Matters

• Impairment increases the risk of injuries, equipment incidents, and property damage.
• Reduced awareness and slower reactions can place the entire crew at risk.
• Recognizing unsafe behaviors early helps prevent serious incidents.
• Reporting concerns promptly allows supervisors to address safety risks appropriately.
• Everyone shares responsibility for maintaining a safe, fit-for-duty workplace.

Common Signs of Impairment

• Difficulty concentrating or following instructions.
• Slowed reaction time or delayed responses.
• Poor coordination, balance, or unsteady movements.
• Confusion, disorientation, or unusual behavior.
• Frequent mistakes, poor judgment, or unsafe decisions.
• Difficulty communicating clearly or responding appropriately.
• Noticeable changes in alertness or awareness.
• Inability to safely operate tools, vehicles, or equipment.

Safety Checklist

Before Work Begins

• Report to work fit for duty and able to safely perform your assigned tasks.
• Understand your company's fit-for-duty and reporting procedures.
• Inform your supervisor if a medical condition or medication may affect your ability to work safely, following company policy.
• Review the day's high-risk activities during the pre-job briefing.
• Know how to report safety concerns involving a worker's ability to safely perform assigned duties.
• Focus on safety-related behaviors rather than trying to determine the cause of a coworker's condition.

During the Workday

• Monitor yourself and coworkers for behaviors that could create a safety hazard.
• Report concerns immediately through established supervisory channels.
• Do not allow anyone who appears unable to safely perform work to continue high-risk tasks.
• Remain professional, respectful, and avoid confronting coworkers aggressively.
• Allow supervisors to evaluate and address the situation according to company procedures.
• Continue following all safe work practices and maintain clear communication throughout the shift.

Crew Talking Points

• What behaviors could indicate someone is not fit for duty?
• Why should workers focus on observable safety concerns instead of assuming the cause?
• How should concerns about a coworker's ability to work safely be reported?
• Which tasks on today's job require the highest level of alertness?
• What should you do if you believe someone cannot safely operate equipment?
• Speak up immediately if you observe behaviors that create an immediate safety risk.

Stop Work If

• A worker appears unable to safely perform assigned duties.
• Unsafe behavior creates an immediate risk to people, equipment, or property.
• Someone cannot safely operate vehicles, machinery, or power tools.
• Judgment, coordination, or awareness appears significantly impaired.
• Safe work procedures cannot be followed because of a worker's condition.
• You are unsure whether it is safe to continue working.

Final Reminder

Recognizing impairment is about identifying unsafe behaviors—not determining their cause. Focus on whether someone can safely perform the job, report concerns promptly through the proper channels, and allow supervisors to address the situation according to company procedures. Early action helps prevent injuries and protects everyone on the jobsite.