A supervisor notices that a driver is speaking unusually slowly, has watery eyes, and struggles to follow a routine dispatch instruction. The next steps matter, but so do the notes. Knowing how to document reasonable suspicion observations helps employers make timely, defensible decisions without relying on assumptions, labels, or personal opinions.

For DOT-regulated employers, a reasonable suspicion determination must be based on specific, contemporaneous, articulable observations. A well-written record shows what the supervisor saw, heard, or smelled; when it happened; and what action followed. It also helps protect the employee, the supervisor, and the employer by creating a clear account of a safety-sensitive decision.

Start With Observable Facts, Not Conclusions

The strongest documentation describes conduct and physical indicators without diagnosing impairment. A supervisor may believe an employee appears impaired, but the record should establish the facts that led to that concern.

Write, “Employee’s speech was slow and words were slurred during a 7:15 a.m. pre-trip discussion.” Do not write, “Employee was drunk.” Write, “Employee stumbled when stepping down from the cab and held the handrail for balance.” Do not write, “Employee was under the influence.”

The distinction is more than a writing preference. Supervisors are not medical professionals, and a reasonable suspicion record is not a diagnosis. It is a factual account supporting the decision to remove an employee from safety-sensitive work and arrange testing under the applicable policy and regulations.

Avoid vague phrases such as “acted strange,” “looked high,” or “had a bad attitude.” These statements leave too much room for interpretation. Specific facts are more credible because another person can understand exactly what occurred.

What to Include in a Reasonable Suspicion Record

A complete record should be created as soon as practical after the observations and before details become unclear. Use your company’s reasonable suspicion form when one is available, but do not treat the form as a substitute for meaningful notes.

Your documentation should identify the employee, the observing supervisor, the date, and the exact time and location of each observation. It should also state whether the employee was scheduled for, performing, or about to perform safety-sensitive duties.

Capture the observations in four practical categories:

  • Appearance: Bloodshot or watery eyes, sweating inconsistent with conditions, flushed skin, disheveled appearance, or visible tremors.
  • Behavior: Unsteady movement, difficulty completing routine tasks, unusual agitation, confusion, falling asleep, or erratic conduct.
  • Speech: Slurred words, unusually slow responses, incoherent statements, repetitive speech, or a noticeable change in speech pattern.
  • Body odor: The odor of alcohol, cannabis, or another substance, described factually and without speculation.

Context gives these observations meaning. Note the weather, work conditions, time of day, and any relevant events. Sweating after physical labor in high heat may have an ordinary explanation. The same symptom, combined with slurred speech and loss of balance in a climate-controlled office, may require a different response.

Record direct statements accurately when they are relevant. If an employee says, “I barely slept and took something for my back,” document the words as closely as possible, including who was present. Do not press for a medical explanation or attempt to determine whether a medication was lawfully prescribed. The testing process and medical review process have separate roles.

Build a Clear Timeline

Reasonable suspicion decisions are often made under pressure. A timeline keeps the documentation organized and shows that the employer acted promptly.

Begin with when the employee reported for duty or was first observed. Then record each significant event in order: the initial concern, any additional observations, a second supervisor’s observations if applicable, removal from duty, notification to the designated company contact, testing instructions, and transportation arrangements.

For example, a record may state that at 6:50 a.m., the supervisor observed the employee walking unsteadily from the parking area. At 6:55 a.m., during a conversation about the day’s assignment, the employee spoke slowly and had a noticeable odor of alcohol. At 7:00 a.m., the supervisor removed the employee from safety-sensitive duties and contacted the company’s testing coordinator.

This level of detail is useful even when a test result is negative. The purpose of the record is to demonstrate that the decision was based on what the supervisor reasonably observed at the time, not on the final result.

Use a Second Trained Supervisor When Available

A second trained supervisor can strengthen the process, particularly when the observations are subtle or an employee disputes the concern. The second supervisor should make and document independent observations rather than simply agree with the first supervisor’s conclusion.

Each supervisor should complete separate notes in their own words. If both observed the same event, they may describe it differently. That is normal. Independent records can be more credible than identical wording copied from one form to another.

A second observer is not always required. The applicable DOT agency rules and your company policy determine the process. When immediate action is necessary to protect safety, do not delay removing an employee from safety-sensitive duties solely because a second supervisor is unavailable.

Understand the DOT Testing Standard

DOT reasonable suspicion testing has specific requirements. Supervisors making determinations must receive the required training on the physical, behavioral, speech, and performance indicators of probable drug use and alcohol misuse.

For DOT drug testing, the decision must be based on specific, contemporaneous, articulable observations concerning appearance, behavior, speech, or body odors. For alcohol testing, the observations must be made just before, during, or just after the employee performs safety-sensitive functions. Your DOT agency rules, including FMCSA requirements where applicable, and your company policy should guide the exact response.

Employers should also distinguish between a reasonable suspicion determination and a test result. A negative result does not mean the supervisor acted improperly if the contemporaneous observations supported the decision. Likewise, a positive result should never be used to fill gaps in weak or incomplete observation notes.

For non-DOT workplace programs, employer policy, collective bargaining obligations, provincial or state requirements, and privacy considerations may differ. Canadian employers in particular should confirm that their policy, testing threshold, and documentation process align with the legal framework that applies to their workplace.

Document the Action Taken, Including Safe Transportation

The observation record should explain what the company did after the determination. State that the employee was removed from safety-sensitive duties, who gave the instruction, and the time it occurred.

If testing was arranged, document the collection site or testing provider, the time the employee was directed to test, and whether the employee arrived or declined. Follow your written policy and DOT procedures if an employee refuses to test. Do not argue about the observations or attempt to force an admission.

Transportation is a safety issue. An employee who may be impaired should not drive themselves to a collection site or home. Record the safe transportation plan, such as a ride service, family pickup, company-arranged transportation, or another approved option. Include the name of the person who confirmed the arrangement when appropriate.

Keep the record focused on the incident. Do not include unrelated performance problems, rumors from coworkers, protected medical information, or subjective character judgments. Those details can undermine the fairness and confidentiality of the process.

Store Records Securely and Consistently

Reasonable suspicion documentation contains sensitive employee information. Limit access to authorized HR, safety, compliance, and program administration personnel. Store the record separately from general personnel files when your recordkeeping process requires it, and retain it for the period required by the applicable DOT rules and company policy.

Consistency is essential. Use the same documentation standard for every employee, regardless of position, seniority, or personal relationship with the supervisor. A consistent process supports fair treatment and makes it easier to demonstrate compliance during an audit, investigation, or legal review.

Supervisor training should include practice writing observations. A supervisor may recognize concerning signs but still struggle to describe them accurately under pressure. Scenario-based training, current forms, after-hours contact procedures, and a defined testing coordination process help turn a difficult moment into an organized compliance response.

When a reasonable suspicion event occurs, the goal is not to prove what caused the behavior on the spot. The goal is to protect safety, document facts carefully, and follow the testing process your program requires. Clear notes made at the time give your team the confidence to act fairly when the next safety-critical decision cannot wait.