Arkansas Drug Testing Laws & Workplace Regulations
Last updated:August 27, 2026
Arkansas Drug Testing Laws for Employers: A DOT and Non DOT Compliance Guide
Arkansas employers occupy an interesting middle ground compared to other states. The state offers real financial incentives for maintaining a drug free workplace, and it gives employers broad latitude to test. At the same time, the Arkansas Medical Marijuana Amendment created protections that catch a lot of employers off guard, particularly those who assume a positive test is automatically actionable.
At US Drug Test Centers, we help Arkansas employers capture the benefits while avoiding the traps. This guide covers both the federal DOT requirements that apply here and the Arkansas specific rules that govern non DOT testing.
Two Separate Programs, Two Separate Rulebooks
Federal DOT testing applies to employees who perform safety sensitive functions in regulated transportation industries. Those rules come from 49 CFR Part 40 and the individual DOT operating administrations. Arkansas law has no authority to modify them, and Arkansas medical marijuana protections do not reach them.
Non DOT testing covers every other employee in your organization. Arkansas state law and your written policy control here.
Keeping these programs separate is not a formality. It is the difference between a program that survives a federal audit and a state court challenge, and one that fails both.
DOT Drug and Alcohol Testing in Arkansas
Arkansas is a significant freight state. Interstate 40 carries enormous east-west truck volume, the state is home to major carriers and a substantial logistics industry, and it has active rail, pipeline, and river transportation operations along the Arkansas and Mississippi Rivers.
Who Is Covered
The Federal Motor Carrier Safety Administration regulates CDL drivers operating commercial motor vehicles in interstate and, in most cases, intrastate commerce. The Federal Railroad Administration regulates covered rail employees. The Pipeline and Hazardous Materials Safety Administration regulates pipeline operations and maintenance personnel. The Federal Aviation Administration regulates aviation safety sensitive employees. The Federal Transit Administration regulates employees of federally funded transit systems. The U.S. Coast Guard regulates crewmembers on commercial vessels operating on Arkansas waterways.
The Standardized Federal Panel
DOT testing uses a five panel urine screen processed by a laboratory certified by the Department of Health and Human Services. The panel covers marijuana, cocaine, opiates including hydrocodone, hydromorphone, oxycodone, and oxymorphone, amphetamines including methamphetamine and MDMA, and phencyclidine. Alcohol testing is separate, conducted on evidential breath testing devices, with 0.04 constituting a violation and 0.02 through 0.039 requiring removal from safety sensitive duty.Every non-negative laboratory result goes to a Medical Review Officer, who contacts the employee and evaluates whether a legitimate medical explanation exists before reporting a verified result.
Required Testing Circumstances
DOT employers must conduct pre employment testing, random testing at the annual rates set by each agency, reasonable suspicion testing based on trained supervisor observation, post accident testing under agency specific thresholds, and return to duty and follow up testing directed by a Substance Abuse Professional.
FMCSA Clearinghouse
Arkansas motor carriers must query the Drug and Alcohol Clearinghouse before hiring a CDL driver and annually for current drivers, and must report violations, refusals, and return to duty information. Given the concentration of trucking in this state, Clearinghouse compliance is one of the highest volume issues we handle for Arkansas clients.
No Medical Marijuana Exception Under DOT
An Arkansas medical marijuana registry card provides zero protection in a DOT test. Federal law does not recognize state medical cannabis programs, and a Medical Review Officer is prohibited from verifying a marijuana positive as negative on that basis.
Non DOT Drug Testing Laws in Arkansas
General Employer Authority
Arkansas does not have a comprehensive statute regulating private employer drug testing in the way that some states do. Private employers in Arkansas generally have wide discretion to conduct pre employment, random, reasonable suspicion, post accident, and periodic testing, provided they do so under a clear written policy applied consistently and without discrimination.That discretion is not unlimited. The Arkansas Medical Marijuana Amendment, discussed below, is the most significant constraint.
The Arkansas Medical Marijuana Amendment
Arkansas voters approved Amendment 98 in November 2016, creating a medical marijuana program with express employment provisions. This is where Arkansas employers most often get into trouble.The amendment prohibits employers from discriminating against an applicant or employee based solely on that person's status as a qualifying patient or designated caregiver. An Arkansas employer generally may not refuse to hire or terminate someone simply because they hold a registry card.At the same time, the amendment preserves substantial employer authority. Employers are not required to accommodate the ingestion of marijuana in the workplace or an employee working while under the influence. Employers may implement and enforce drug free workplace policies. Critically, an employer may take adverse action based on a good faith belief that a qualifying patient was under the influence of marijuana while at work, and the amendment provides that an employer acting on such a good faith belief does not violate the anti discrimination provision.The practical guidance we give Arkansas employers is this: cardholder status alone is not a lawful basis for adverse action, and a bare metabolite positive is a weak foundation on its own. Build your case on documented observation. Train supervisors to record specific behavioral indicators, and preserve that documentation alongside the test result.
Safety Sensitive Positions in Arkansas
Amendment 98 also allows employers to exclude qualifying patients from safety sensitive positions based on a good faith belief that the patient was engaged in the current use of marijuana. Arkansas defines safety sensitive positions broadly, including work involving the handling or operation of heavy or powered equipment, work with hazardous or flammable materials, work involving food or medicine preparation or handling, direct patient care, work involving firearms, and positions where a lapse of attention could cause injury or death.Arkansas employers should designate safety sensitive positions in writing, in advance, as part of the policy. Retroactive designation after a positive result carries far less weight.
Recreational Marijuana
Arkansas has not legalized recreational marijuana. Non medical use remains unlawful under state law, and employers retain full authority to test for and act on it.
The Arkansas Drug Free Workplace Program
Arkansas offers a voluntary drug free workplace program tied to workers compensation. Employers who establish a qualifying program, which includes a written policy, employee education, supervisor training, an employee assistance component, and testing conducted under specified standards, may qualify for a premium credit from their workers compensation carrier.Beyond the premium savings, participation strengthens the employer's position in benefit disputes. Arkansas law allows for the denial of workers compensation benefits where the injury was substantially occasioned by the use of alcohol or illegal drugs, and a positive post accident test conducted under a qualifying program creates a rebuttable presumption in the employer's favor. Shifting that burden onto the employee is a meaningful advantage.
Unemployment Considerations
A discharge for violating a known drug policy can constitute misconduct connected with the work under Arkansas unemployment law, affecting benefit eligibility. The strength of that position depends on whether the policy was written, distributed, acknowledged, and consistently enforced.
Building a Defensible Arkansas Program
Put your policy in writing and distribute it with signed acknowledgments. Identify safety sensitive positions in that document before you need to rely on the designation. Address medical marijuana cardholder status directly and describe how good faith impairment determinations will be made. Maintain separate DOT and non DOT random pools with separate records. Train supervisors to document observable behavior, speech, appearance, and performance rather than writing conclusions like "seemed high." Use certified collectors, accredited laboratories, and Medical Review Officer review on every non negative result. Enforce the policy uniformly. Review it annually.
Nationwide Testing & Compliance Services
Need a State-Compliant Drug Testing Policy?
US Drug Test Centers helps employers establish DOT & non-DOT compliant testing programs, draft custom workplace policies, and schedule immediate drug testing at over 20,000 collection sites nationwide.
How US Drug Test Centers Supports Arkansas Employers
We operate collection sites across Little Rock, Fayetteville, Fort Smith, and more throughout Arkansas backed by certified laboratory analysis and Medical Review Officer services. We manage DOT random pools, handle Clearinghouse queries and reporting, deliver supervisor reasonable suspicion training, and draft policies designed around Amendment 98 and the Arkansas drug free workplace premium credit program.
Contact US Drug Test Centers to design an Arkansas program that protects your workforce and your bottom line.
Disclaimer: Please note that this material is provided for general informational purposes only. It is not legal advice, and it does not create an attorney-client or advisory relationship. Drug and alcohol testing law changes frequently at both the federal and state level, and the correct application of any rule depends on your industry, your workforce, and the specific facts of your situation. Before adopting, modifying, or acting on any testing policy, verify the current requirements with your own compliance team, legal counsel, or a qualified employment attorney licensed in your state.