Short Answer

A refusal to test is any of several specific actions defined under 49 CFR § 40.191 that DOT regulations treat as equivalent to failing a drug or alcohol test. Refusal is broader than simply saying "no" to a test. It includes things like failing to appear for a test, leaving the collection site before testing is complete, failing to provide a sufficient specimen without an adequate medical explanation, and failing to cooperate with parts of the collection process. Under 49 CFR § 40.285(b), a refusal to test is treated the same as a verified positive result and triggers the DOT violation consequences, including the requirement for a SAP evaluation.

Actions That Count as a Refusal

Under 49 CFR § 40.191, an employee has refused a test if the employee, among other things:

• Fails to appear for a test within a reasonable time after being directed to do so (with an exception for pre-employment tests)
• Fails to remain at the testing site until testing is complete (with a narrower exception for pre-employment tests where the employee leaves before testing begins)
• Fails to provide a sufficient specimen without an adequate medical explanation
• Fails to permit observation or monitoring of a directly observed collection
• Fails or declines to take an additional, directed test
• Fails to undergo a required medical evaluation
• Fails to cooperate with any part of the testing process, such as refusing to empty pockets, disrupting the collection, failing to wash hands, or failing to remove objects from the mouth when instructed
• For observed collections, fails to follow instructions to raise or lower clothing or to turn around
• Possesses or wears a prosthetic device that could interfere with the collection
• Admits to adulterating or substituting a specimen

Verified Adulterated or Substituted Results Are Treated as Refusals

A verified adulterated or substituted specimen result is also treated as a refusal to test under 49 CFR § 40.191, even without an explicit admission from the employee. The regulation treats tampering with a specimen as functionally equivalent to refusing the test outright.

Refusal Consequences Cannot Be Overturned Through Grievance or Arbitration

49 CFR § 40.191 specifies that the consequences of a refusal cannot be overturned through arbitration, a grievance process, or state courts. This is a DOT regulatory determination, separate from any other employment dispute process an employee might otherwise use.

Refusing a Non-DOT Test Is Not a DOT Refusal

Refusing a test that is not conducted under DOT authority, for example a purely internal company drug policy test outside the DOT program, does not count as a DOT refusal under 49 CFR § 40.191. The regulation applies specifically to DOT-mandated testing.

Applicable Regulations

• 49 CFR § 40.191 defines the specific actions that constitute a refusal to test.
• 49 CFR § 40.285(b) identifies a refusal to test as a DOT violation, equivalent in consequence to a verified positive result.

Professional Observation

In my experience, employees sometimes think a refusal only occurs if they explicitly say "I refuse." That is a common and costly misunderstanding. Many of the actions listed above can result in a refusal finding even when the employee never uses that word.

Common Misconceptions

Misconception

Refusal only occurs if I explicitly tell the collector I refuse to test.

Reality

Refusal covers a range of actions under 49 CFR § 40.191, including leaving the site early, failing to cooperate with parts of the collection, or failing to permit required observation, regardless of whether the word "refuse" is ever used.

Why the Confusion Occurs

The word "refusal" sounds like it requires an explicit verbal statement, but the regulation defines it functionally, based on conduct during the testing process.

Frequently Asked Questions

Can I contest a refusal finding through my union's grievance process?

No. Under 49 CFR § 40.191, the consequences of a refusal cannot be overturned by arbitration, a grievance process, or state courts.

Does refusing a non-DOT workplace test count as a DOT refusal?

No. Only refusals connected to a DOT-mandated test fall under 49 CFR § 40.191.

Related Articles

• What Is an Observed Collection?
• What Is a Dilute Specimen?
• What Is an Adulterated Specimen?

Primary Authorities/Sources

• 49 CFR § 40.191, Refusal to test
• 49 CFR § 40.285, When is a SAP evaluation required?

Concerned About a Possible Refusal Finding?

If you believe a refusal has been recorded in error, or you are unsure how a specific situation will be classified, speak with your employer's DER as soon as possible.

Schedule a Consultation