Does Clean Harbors Drug Test?

Drug Testing by Position

Clean Harbors' Zero-Tolerance Drug Policy

Clean Harbors is the largest provider of environmental, energy, and industrial services in North America. The company handles hazardous waste disposal, emergency spill response, industrial cleaning, and environmental remediation. Given the extreme dangers involved — workers handle toxic chemicals, operate in contaminated environments, drive tanker trucks carrying hazardous materials, and respond to chemical emergencies — Clean Harbors maintains one of the strictest drug-free workplace policies in any industry. All employees, from field technicians to office staff, are drug tested during the hiring process.

DOT and OSHA Compliance

Clean Harbors operates a large fleet of specialized vehicles including hazmat tanker trucks, vacuum trucks, and roll-off trucks. All CDL drivers, especially those with hazmat endorsements, are subject to full DOT drug testing protocols including pre-employment, random, post-accident, and reasonable-suspicion testing. Beyond DOT requirements, OSHA regulations for hazardous waste operations (HAZWOPER) require employers to ensure worker fitness for duty, which Clean Harbors addresses in part through its drug testing program. Field workers who respond to emergency spills must be alert and capable of following strict safety protocols.

What to Expect During Hiring

Clean Harbors' hiring process includes a drug test, background check, physical examination, and often HAZWOPER certification or training. After receiving a conditional job offer, you will be sent to a third-party collection site for a urine drug test. The test must typically be completed within 24 hours given the urgency of staffing in environmental services. The panel tests for marijuana (THC), cocaine, opioids, amphetamines, and PCP. Clean Harbors does not make exceptions for state marijuana legalization given the hazardous nature of the work and federal DOT/OSHA requirements.

Frequently Asked Questions

Does Clean Harbors drug test all employees?

Yes. Clean Harbors drug tests all employees across all positions. The hazardous nature of the work — handling toxic chemicals, operating in contaminated environments, and driving hazmat vehicles — requires a comprehensive drug-free workplace policy with no exceptions.

What type of drug test does Clean Harbors use?

Clean Harbors uses urine drug tests for both DOT and non-DOT positions. The standard panel tests for marijuana (THC), cocaine, opioids, amphetamines, and PCP. DOT-regulated drivers follow the federal DOT testing protocol.

Does Clean Harbors do random drug tests?

Yes. CDL drivers are subject to DOT-mandated random drug testing. Many field positions are also subject to random testing due to the safety-sensitive nature of environmental services work. All employees are subject to post-accident and reasonable-suspicion testing.

Does Clean Harbors test for marijuana?

Yes. Clean Harbors tests for marijuana (THC) for all positions without exception. The company handles hazardous materials and operates in dangerous environments where impairment could lead to chemical exposure, environmental contamination, or fatal accidents. Federal DOT and OSHA requirements further support this policy.

Can I work at Clean Harbors with a criminal record?

Clean Harbors conducts background checks and evaluates criminal history on a case-by-case basis. Some positions may be available to people with criminal records depending on the nature of the offense, how long ago it occurred, and the specific job requirements. However, you must pass the drug test regardless.