Can a Texas employer require a drug test for reasonable suspicion?
Yes, and the whole defence is the contemporaneous record of what was actually observed.
Last updated: August 02, 2026
Direct Answer
Yes, a Texas employer can require a drug test based on reasonable suspicion if the policy is clearly communicated and consistently applied. The key concern is making sure the suspicion is supported by observable facts and the process is documented to withstand scrutiny, which helps protect both your business and employees.
Controlling authority: OSHA clarification of 11 October 2018 on 29 CFR 1904.35(b)(1)(iv). Texas has no general statute restricting private-employer drug testing.
Yes — and the record is the entire defence
In practical terms, reasonable suspicion means that a manager or supervisor has witnessed specific behaviors, signs, or evidence that reasonably indicate drug use or impairment at work. It’s not about hunches or rumors but concrete observations that align with a well-defined policy. This approach provides a defensible basis for requesting a drug test without overstepping employee rights or creating legal exposure.
For Texas employers, balancing compliance with operational realities is essential. Drug testing on reasonable suspicion must be part of an overall, consistently enforced policy that includes clear definitions, trained managers, and proper documentation. Without these elements, testing decisions can seem arbitrary, increasing the risk of disputes, grievances, or accusations of discrimination or retaliation.
| Field | What to record | Why |
|---|---|---|
| Who observed it | Named observers, ideally two, both trained | A single untrained observer is the weakest possible position. |
| What was observed | Specific, objective, sensory observations — speech, gait, eyes, odour, coordination | “Seemed off” is not reasonable suspicion. |
| When and where | Date, time and location, recorded contemporaneously | A form completed after the result arrives is worthless. |
| Job impact | What the employee was doing, and what could have gone wrong | Connects the suspicion to a legitimate business need. |
| What was said | The employee’s own explanation, in their words | Frequently discloses a medication or medical issue that changes the analysis. |
| The decision and who made it | Named decision-maker and the time of the decision | Establishes that suspicion preceded the test, not the reverse. |
| Transport and safety | How the employee got home | Sending a suspected-impaired employee to drive is its own liability. |
“Seemed off” is not reasonable suspicion
What I see employers often miss is that having a drug testing policy alone isn’t enough. The real challenge lies in how supervisors are trained to recognize and document reasonable suspicion. Without clear guidance, managers may either hesitate to act or apply standards inconsistently, both of which undermine your ability to maintain a safe workplace and defend your decisions if challenged.
Another common oversight is failing to integrate drug testing policies with other workplace safety and conduct rules. Employers sometimes treat drug testing as an isolated step rather than part of a broader system of accountability. This disconnect can cause confusion, morale problems, and operational headaches that erode trust and increase turnover.
| Practice | Permitted? | Detail |
|---|---|---|
| Random drug testing | Yes | Expressly identified as permissible. |
| Testing unrelated to injury reporting | Yes | Not within the rule at all. |
| Testing required under state workers’ compensation law | Yes | Including Texas premium-discount programmes. |
| Testing under DOT or other federal rules | Yes | Unaffected. |
| Testing to evaluate the root cause of an incident | Yes | Expressly permitted where the incident harmed or could have harmed employees. |
| Testing only the person who reported the injury | No | Where you test to investigate, you must test every employee whose conduct could have contributed. Selective testing is what the rule actually prohibits. |
| Using testing to penalise reporting | No | This is the whole target of the provision. The prohibition is on retaliation, not on testing. |
Where suspicion testing fails
Ignoring operational and compliance details when requiring drug tests on reasonable suspicion exposes your organization to several avoidable risks that can quickly escalate.
- Inconsistent supervisor training leading to biased testing decisions.
- Lack of proper documentation undermining defensibility in disputes.
- Failure to apply policies uniformly causing employee grievances.
- Ignoring privacy and confidentiality requirements during testing.
- Poor communication generating distrust and morale issues.
Complete the observation record before the test
Before requiring a drug test, review your written policy to confirm it clearly defines what constitutes reasonable suspicion and outlines steps supervisors must take. Check if managers have received practical training on identifying signs of impairment and documenting observations immediately. This ensures your process is both legally sound and operationally feasible under real-world pressures.
Also assess how your policy fits into broader workplace safety and conduct systems. Verify that testing procedures respect employee privacy and confidentiality, and that you have a consistent approach for follow-up actions after a positive test. These reviews reduce liability and help maintain leadership credibility with employees, which is critical to sustaining a productive work environment.
Documentation Defensibility Scorecard
Rates a real file against the standard a reviewer will apply to it.
When suspicion is contested
Get HR support when your supervisors struggle with making reasonable suspicion calls or when documentation practices are weak. HR professionals can provide training, develop clear checklists, and help managers apply policies consistently. This reduces guesswork and helps you avoid costly mistakes that often arise from rushed or poorly informed decisions.
Consider engaging HR expertise if your current drug testing program lacks integration with other compliance requirements or if employee relations tensions around testing are increasing. Experienced HR consultants bring an operational perspective that balances legal risk management with practical leadership tools, ensuring your system works on paper and in daily practice.
Need Help Crafting or Reviewing Your Drug Testing Policy?
Faulkner HR Solutions can provide tailored guidance to ensure your reasonable suspicion drug testing process aligns with Texas compliance requirements and operational realities. Let us help you build a system that supports leadership accountability and workforce trust.
Contact Us TodayThis page provides general HR information for employers and is not legal advice. For legal interpretation or representation, consult qualified employment counsel.