11.5 Worker Impairment, Fitness for Duty, and Sensitive Response

Treat impairment as a safety-sensitive condition

The ASP11 blueprint includes worker impairment in the Legal domain because it connects safety, privacy, employment action, and professional limits. Impairment means a worker may not be able to perform safely at that moment. The cause is not always alcohol or illegal drugs. Fatigue, prescribed medication, illness, heat stress, grief, distraction, low blood sugar, stress, or exposure to chemicals can also affect judgment, coordination, alertness, or reaction time.

A safety professional should focus on objective observations and immediate exposure. Instead of diagnosing a worker, document observable facts: unsteady walking, slurred speech, confusion, near-miss behavior, repeated procedural errors, sleeping during safety-sensitive work, odor, visible distress, or inability to follow instructions. Avoid labels such as drunk, addicted, lazy, or unstable unless a qualified process has established the fact. Labels can create legal, privacy, and dignity problems.

A careful response sequence is:

• Remove the worker from immediate safety-sensitive exposure if policy and authority allow.
• Keep the conversation private and respectful.
• Notify the supervisor or designated contact.
• Follow written policy for testing, medical evaluation, transportation, or return-to-work decisions.
• Document objective observations, times, witnesses, and actions taken.
• Protect confidential information from gossip or casual sharing.

Consistency is important. Similar observations should trigger similar policy steps regardless of job title, contractor status, seniority, production pressure, or personal relationship. Inconsistent treatment can create claims of unfairness and can leave hazards uncontrolled. If a contractor employee appears impaired, coordinate through the contractor supervisor and site contact while still protecting exposed workers. Do not allow unclear employer boundaries to delay immediate hazard control.

Fitness-for-duty decisions may involve occupational health, human resources, medical providers, supervisors, legal counsel, union rules, or contractor management. The safety professional may provide observations and explain safety-sensitive job demands, but should not decide medical fitness alone unless that authority is clearly part of the role and supported by policy. Questions about disability accommodation, medication restrictions, medical privacy, testing rights, or discipline should be escalated.

The exam may try to tempt a quick punitive answer. Punishment is not the first safety control. The immediate goal is to prevent harm, treat the person respectfully, and apply policy. That may mean stopping forklift operation, reassigning the person away from energized work, arranging safe transportation, or pausing a confined-space entry. The response should not shame the worker in front of peers or ask untrained coworkers to make medical judgments.

Documentation should be factual and limited. Record what was seen, heard, smelled, reported, and done. Record who was notified and when. Do not include jokes, speculation, diagnosis, or unrelated personal information. If testing or medical records are involved, follow the organization's privacy and retention rules. A good ASP answer balances two duties: protect people from immediate operational risk and respect the legal and human sensitivity of impairment concerns.