Virginia does not have a general statute that tells private employers when they may or may not drug test. There is no state law requiring advance notice, no state mandated panel, and no blanket right for a private sector employee to refuse a test. Virginia is an at will employment state, and most private employers may set their own drug testing policy as a condition of employment, as long as the policy does not cross into areas Virginia law does protect, such as the medicinal use of cannabis oil, and as long as testing does not become a pretext for discrimination under state or federal civil rights law.
That does not mean the state is a blank slate. Three areas of the Code of Virginia shape how testing interacts with employment outcomes: an employment protection for lawful cannabis oil use, a workers compensation rule about intoxication and injury, and an unemployment compensation rule about misconduct. Federally regulated and federal contractor employers layer on top of that.
No general private employer testing statute
Because Virginia has not enacted a comprehensive drug testing statute for private employers, most companies set their own policy covering pre employment, reasonable suspicion, post accident, random and return to duty testing. The practical limits come from other bodies of law, not a testing specific statute: the Americans with Disabilities Act and Virginia Human Rights Act, the cannabis oil employment protection described below, and general wrongful termination and privacy principles. Employers should consult counsel before drafting or changing a policy, since how a policy is written and applied, not just whether testing happens, is usually what creates legal exposure.
Cannabis oil employment protection: Va. Code 40.1-27.4
Virginia law protects employees who use cannabis oil lawfully under a valid written certification from a practitioner for a diagnosed condition. Under Va. Code 40.1-27.4, an employer generally may not discharge, discipline, or discriminate against an employee for that lawful, certified use. The statute defines cannabis oil by reference to Virginia's cannabis control law, and it excludes law enforcement officers from the definition of a protected employee.
The protection has real limits. It does not restrict an employer's ability to take adverse action for impairment while performing job duties, and it does not protect possessing or using cannabis oil during work hours. It also does not require an employer to do anything that would put the employer in violation of federal law, or that would cause the loss of a federal contract or federal funding, which is why the exception matters most for employers in the federal contracting space and the defense industrial base, where marijuana and its derivatives remain controlled substances under federal law regardless of a Virginia certification. An employer in that position may generally continue to enforce a zero tolerance standard for safety sensitive roles.
This statute addresses cannabis oil specifically, not general recreational marijuana use. Virginia has separately decriminalized limited personal possession of marijuana for adults, but that framework does not itself create a parallel employment protection the way 40.1-27.4 does for certified cannabis oil. Employers should read the statute text directly and talk to counsel before disciplining an employee who raises a medical certification, since the facts determine the outcome.
Workers compensation and intoxication: Va. Code 65.2-306
Virginia's workers compensation law lets an employer deny a claim when an injury or death was caused by the employee's intoxication. Under Va. Code 65.2-306, if the employer raises intoxication or use of a nonprescribed controlled substance as a defense, and the employee's bodily fluids at the time of injury met or exceeded the blood alcohol standard in Va. Code 18.2-266, or a SAMHSA certified laboratory returned a positive test result for a nonprescribed controlled substance, a rebuttable presumption arises that the employee was intoxicated. That presumption does not apply if the employee died from the injury, and the employer carries the burden of proving the defense.
An employee can still overcome the presumption with evidence that intoxication was not the cause of the accident. The statute is a defense an employer must raise and prove, not an automatic bar to every claim where a substance shows up in a post accident test, which is why post accident testing protocols and chain of custody documentation matter for employers relying on this section.
Unemployment misconduct for a positive test: Va. Code 60.2-618
Virginia's unemployment compensation law treats a confirmed positive drug test as misconduct that can disqualify a former employee from benefits, under specific conditions. Under Va. Code 60.2-618, a confirmed positive test for a nonprescribed controlled substance counts as misconduct when the test was conducted at the employer's direction under the employer's known, written drug policy, and the sample was collected and tested to recognized standards by a laboratory accredited by HHS, the College of American Pathologists, the American Association for Clinical Chemistry, or an equivalent, or was a DOT qualified drug screen run under the employer's bona fide policy.
The Virginia Employment Commission reviews these claims case by case and may weigh mitigating circumstances. A written policy that employees have actually received, a chain of custody that holds up, and a confirmation step at an accredited laboratory (not a screening result alone) are what typically make this defense work when an employer contests a former employee's unemployment claim. General eligibility and disqualification standards are summarized on the Virginia Employment Commission benefits eligibility page; the statute text controls over any summary.
Public sector, DOT and federal contractor employers
Public employers in Virginia, including state agencies and localities, operate under their own personnel policies in addition to the statutes above, and those policies vary by agency. The Virginia Department of Labor and Industry is the state's labor standards and workplace safety agency and is a useful starting point for public guidance, though it does not maintain a single statewide testing rule.
Employers of commercial drivers, pipeline workers, and other federally regulated safety sensitive positions must follow the federal testing and specimen collection procedures in 49 CFR Part 40 regardless of what Virginia state law would otherwise allow. Part 40 governs collection sites, specimen validity testing, laboratory certification, and the medical review officer process, and it generally preempts a conflicting state rule for the regulated positions it covers. Federal contractors and defense industrial base employers also need to weigh the federal law exception inside 40.1-27.4 described above.
Screening versus confirmation, and the MRO role
Whatever the policy basis, a rapid immunoassay cup or dip card result is a screening result, not a final determination. A nonnegative screen indicates the sample reacted above a cutoff concentration for a drug class; it does not identify the exact substance or rule out a legitimate prescription. Confirmation by gas chromatography mass spectrometry or liquid chromatography tandem mass spectrometry at a certified laboratory identifies the specific compound and concentration, and in a DOT regulated or MRO reviewed program, a medical review officer then verifies any nonnegative confirmed result against the employee's prescription documentation before it is reported as positive. Employers relying on 65.2-306 or 60.2-618, where a confirmed result and an accredited laboratory matter directly, should build that confirmation and MRO review step into their written policy rather than treating an initial screen as the final word.
| Legal area | Virginia authority | What it does |
|---|---|---|
| Private sector general testing | No dedicated statute; at will employment | Employer sets policy; general employment and discrimination law applies |
| Cannabis oil use protection | Va. Code 40.1-27.4 | Bars discipline for lawful, certified cannabis oil use; impairment, on site possession and federal contractor exceptions apply |
| Workers compensation | Va. Code 65.2-306 | Rebuttable presumption of intoxication from a qualifying positive test; employer bears burden of proof |
| Unemployment benefits | Va. Code 60.2-618 | Confirmed positive test under a known written policy, collected and tested to accredited standards, can be misconduct |
| Federally regulated safety sensitive roles | 49 CFR Part 40 | Federal collection, lab and MRO procedures apply regardless of state rule |
Building a defensible Virginia policy
A written policy that employees acknowledge in advance is the common thread across all three statutes discussed here. For the cannabis oil protection, a policy should state how an employee can disclose a valid certification and should distinguish impairment and on site possession from off duty lawful use. For the workers compensation and unemployment provisions, the policy should specify when post accident testing is triggered, which laboratory standard applies, and that a confirmed result, not a screening result, is what the employer will rely on. Because state law varies and these statutes have been amended before, employers should check the current statute text at law.lis.virginia.gov rather than relying on a general summary, and should talk to counsel when a specific situation touches more than one provision at once.
Frequently asked questions
Does Virginia require private employers to drug test?
No. Virginia has no statute requiring private employers to test. Testing is generally a matter of employer policy, subject to other laws such as the cannabis oil protection and federal regulations for covered positions.
Can a Virginia employer fire an employee for using medical cannabis oil?
Generally, an employer may not discipline an employee for lawful, certified cannabis oil use under Va. Code 40.1-27.4, but the law does not protect impairment at work or possession during work hours, and federal contractors may have a federal law exception. Employers should consult counsel on specific situations.
Can a positive drug test affect a workers compensation claim in Virginia?
It can. Under Va. Code 65.2-306, a qualifying positive test or blood alcohol result at the time of a workplace injury can create a rebuttable presumption of intoxication that the employer may use as a defense, though the employee may present evidence to rebut it.
Can a positive drug test disqualify someone from Virginia unemployment benefits?
Under Va. Code 60.2-618, a confirmed positive test for a nonprescribed controlled substance, taken under a known written employer policy and tested to accredited laboratory standards, can be treated as misconduct that disqualifies a former employee from benefits for a period set by statute.
Do federal drug testing rules override Virginia state law?
For federally regulated safety sensitive positions, such as commercial drivers, the procedures in 49 CFR Part 40 apply regardless of state law. Federal contractors also face a federal law exception inside the cannabis oil employment protection.
Does a screening test alone prove a violation under these statutes?
No. Virginia's workers compensation and unemployment provisions reference confirmed results from accredited laboratories or DOT qualified screens under a bona fide policy, not an initial screening result alone, and a medical review officer verifies prescription explanations in programs that use one.
American Screening Corporation supplies drug test cups and related screening devices for employer programs; employers building a Virginia specific policy may also find the related overviews of workplace drug testing laws by state and drug testing laws in North Carolina useful for comparing a neighboring state's rules.
This article is general information, not legal advice. Employers should consult qualified counsel before adopting or changing a drug testing policy.
