South Carolina is an employment at will state, and it has no single comprehensive statute forcing every private employer to run a workplace drug testing program. What it does have is a voluntary incentive built into the workers compensation insurance code, unemployment insurance rules spelling out exactly what a drug test has to look like before a positive result can cost a worker benefits, and a workers compensation defense tied to intoxication. Employers who want to know what the law actually requires, versus what is simply good practice, need to look at each piece separately.
This guide covers the Drug-Free Workplace Program, the workers compensation premium credit, the intoxication defense, unemployment misconduct rules for a positive test, and where South Carolina stands on marijuana and hemp derived CBD. It is written for employers and HR decision makers, not as legal advice.
South Carolina does not mandate private employer drug testing
Outside of federally regulated safety sensitive jobs, such as commercial drivers and other positions covered by United States Department of Transportation testing rules under 49 CFR Part 40, South Carolina does not generally require a private employer to test applicants or employees for drugs. An employer may choose to test as a condition of employment, after a workplace accident, on reasonable suspicion, or at random, subject to its own written policy. The decision to test, and how broadly, is left to the employer. Public sector agencies and safety sensitive employers may have their own testing policies, and those vary by employer, so a public employer should confirm its own program with its personnel office or legal counsel.
The South Carolina Drug-Free Workplace Program
South Carolina law allows an employer to establish a drug prevention program in the workplace under South Carolina Code Section 41-1-15. That statute does not create employer immunity on its own. It sets two baseline requirements for a qualifying program: a written substance abuse policy statement that balances respect for employees with the goal of a safe, drug free workplace, and notification to employees of the program and its policies, given either when the program starts or at hiring, whichever comes first. The same section also makes drug test results, interviews, and related records confidential communications. Employers, labs, medical review officers, insurers, and anyone else who receives test result information must keep it confidential, and it generally may only be released with a written consent form that the statute itself describes, or under a short list of legal exceptions such as a court order.
Section 41-1-15 matters because the workers compensation insurance code cross references it as part of what makes a program eligible for a premium credit, the real financial incentive behind the program.
The workers compensation premium credit
The financial reason most South Carolina employers set up a formal drug prevention program is the premium credit described in South Carolina Code Section 38-73-500. Under that section, the state's merit rating system for workers compensation insurance must include a credit of at least five percent for an insured employer that participates in a program designed to prevent drug or alcohol use on the job. The director of the Department of Insurance can approve a lower credit only if an actuary determines that five percent is not actuarially sound, in which case the director sets the credit at whatever lower rate is sound. The guidelines that define a qualifying program have to include the policy statement and employee notification pieces required by Section 41-1-15, so the two statutes work together, not independently.
Section 38-73-500 also sets testing procedure rules for a program run for premium credit purposes. Testing has to include random sampling of everyone who receives wages from the employer. If a second test confirms a result, the law allows one collected sample to be split for both tests rather than drawing a new one. A positive result has to be given to the employee in writing within twenty four hours, and records of each test must be kept for at least one year. Section 38-73-505 confirms the minimum five percent premium reduction applies.
Workers compensation claims and the intoxication defense
South Carolina workers compensation law bars compensation outright in one narrow circumstance tied to substance use. Under South Carolina Code Section 42-9-60, no compensation is payable if an injury or death was occasioned by the intoxication of the employee, or by the employee's willful intent to injure himself or another. The statute places the burden of proof on whoever raises the intoxication defense, meaning the employer or carrier has to prove the connection between intoxication and the injury rather than the injured worker having to disprove it.
The statute's plain text does not spell out a specific evidentiary presumption tied to a positive post accident drug test, or a separate rule for an employee who refuses a post accident test. How a positive test or a refusal is weighed in a particular claim is decided case by case before the South Carolina Workers' Compensation Commission, and the result varies with the facts and the chain of custody behind the test. Employers should not assume a positive test automatically defeats a claim, and should route any intoxication defense through counsel and the employer's workers compensation carrier.
Unemployment insurance and a positive drug test
South Carolina spells out, in detail, what has to happen before a positive drug test can make a discharged worker ineligible for unemployment benefits. South Carolina Code Section 41-35-120(3) disqualifies a worker from benefits for discharge due to illegal drug use only if specific conditions are met. The employer has to have communicated a policy prohibiting illegal drug use where violation can lead to termination. Disqualification can follow if the worker fails or refuses to provide a specimen when the employer requests one, fails or refuses to cooperate, or provides an adulterated sample. It can also follow if the worker provides a blood, hair, oral fluid, or urine specimen that tests positive for an illegal drug or for a legal drug used unlawfully, meaning without a valid prescription, but only if three conditions are all met: the sample was collected and labeled by a licensed health care professional or another person authorized by state or federal law to do so, the test was run by a laboratory certified by the United States Department of Health and Human Services through the Substance Abuse and Mental Health Services Administration, the College of American Pathologists, or the State Law Enforcement Division, and an initial positive screen was confirmed using gas chromatography or mass spectrometry, or an equivalent SAMHSA approved method.
The same section also protects a worker who voluntarily admits prohibited drug use under a written policy before being asked to test, if the policy specifically provides that a voluntary admission made before a testing request protects the employee from immediate termination. A separate provision, Section 41-35-120(4)(iv), treats failure to comply with federal drug and alcohol testing rules, including 49 CFR Parts 40 and 382, as gross misconduct for safety sensitive and transportation jobs, with its own disqualification period.
The practical takeaway is that a positive result alone is not enough to support an unemployment disqualification. The chain from collection through SAMHSA certified lab confirmation has to be documented, and a written drug policy has to already be in place and communicated before the test was requested. This is also why pairing an initial screening device, such as a drug test cup, with lab based gas chromatography or mass spectrometry confirmation matters for any result that will support a disciplinary or unemployment decision.
Marijuana, hemp, and CBD in South Carolina
South Carolina has not enacted a medical marijuana program or an adult use cannabis law. Marijuana possession, cultivation, and distribution outside of a hemp program remain regulated under state controlled substances law. Hemp is different. Under the South Carolina Hemp Farming Act, Title 46 Chapter 55, hemp and hemp products, including CBD derived from hemp, are legal when they meet the federally defined THC level, a delta 9 THC concentration of no more than 0.3 percent on a dry weight basis. That legal status covers the plant and product, not the outcome of a drug test. A standard workplace immunoassay screen is built to flag THC metabolites, and some hemp derived CBD products carry enough residual THC to produce a positive screen even though the product was lawfully purchased. A legal hemp CBD product does not function as a legal defense to a positive result the way a valid prescription reviewed by a medical review officer can, so employers should route any positive result through MRO review before treating it as confirmed.
South Carolina drug testing law reference table
| Statute | Subject | What it establishes |
|---|---|---|
| Section 41-1-15 | Drug-Free Workplace Program basics | Written policy statement, employee notification, and confidentiality of test results and related records |
| Section 38-73-500 | Workers comp premium credit | At least a five percent credit for a qualifying drug prevention program, with random testing and record keeping rules |
| Section 38-73-505 | Premium reduction confirmation | Confirms the minimum premium reduction applies to covered policies |
| Section 42-9-60 | Workers comp intoxication defense | Bars compensation for an injury caused by intoxication, with the burden of proof on the party raising the defense |
| Section 41-35-120(3) | Unemployment misconduct for drug use | Sets the chain of custody, SAMHSA certified lab, and GC/MS confirmation steps needed before a positive test can disqualify benefits |
| Title 46 Chapter 55 | Hemp Farming Act | Legalizes hemp and hemp derived CBD products at or below the federally defined THC level |
Building a defensible program
Employers that want the premium credit, and that want a positive result to hold up in an unemployment or workers compensation proceeding, generally need three things in place before the first test runs: a written policy that meets the notice requirements in Section 41-1-15, a documented chain of custody through a SAMHSA certified laboratory, and a medical review officer process that gives an employee with a valid prescription a chance to explain a result before it is treated as positive. A list of currently certified laboratories is maintained through SAMHSA's drug testing resources page. An initial screen run on site with a drug test cup can speed up a reasonable suspicion or post accident response, but any result used for discipline, an unemployment claim, or a workers compensation defense should be confirmed at a certified lab, not relied on as final. Employers may also want a broader view of workers comp premium discount programs and a state map of workplace drug testing laws.
Frequently asked questions
Does South Carolina require private employers to drug test employees?
No. South Carolina does not have a general statute requiring private employers to test. Testing is voluntary unless a federal rule, such as United States Department of Transportation testing requirements for safety sensitive transportation jobs, applies to the position.
What is the South Carolina Drug-Free Workplace Program and how does it affect workers compensation premiums?
It is a voluntary program described in Section 41-1-15 and Section 38-73-500 of the South Carolina Code. An employer that adopts a qualifying written policy, notifies employees, and runs random testing under the statute's procedures may be able to receive a workers compensation insurance premium credit of at least five percent.
Can a positive drug test affect a workers compensation claim in South Carolina?
Section 42-9-60 bars compensation for an injury caused by intoxication, but the party raising that defense carries the burden of proof. Whether a specific positive test or a refusal to test supports that defense is decided by the South Carolina Workers' Compensation Commission based on the facts of each case, and the outcome varies, so this is generally handled through the employer's carrier and legal counsel.
Can an employee lose unemployment benefits after a positive drug test in South Carolina?
It may be possible, but only if the specific conditions in Section 41-35-120(3) are met, including a communicated written policy, proper sample collection and labeling, testing at a SAMHSA certified laboratory, and confirmation of an initial positive screen by gas chromatography or mass spectrometry.
Is marijuana legal in South Carolina, and does hemp derived CBD protect an employee from a positive test?
South Carolina has not enacted a medical or adult use marijuana law. Hemp and hemp derived CBD products are legal under the state's Hemp Farming Act when they meet the federally defined THC level, but using a legal hemp product does not generally protect an employee from a positive workplace screening result, since some hemp derived products contain enough residual THC to trigger a standard immunoassay test.
Do public employers and safety sensitive positions in South Carolina have different testing rules?
Yes, this generally varies by agency and by job. Safety sensitive positions covered by federal transportation rules follow 49 CFR Part 40 and related part 382 rules regardless of state law. Public employers outside those categories typically set their own testing policy through their personnel rules, so the applicable policy should be confirmed with the specific agency.
This article is general information for employers, not legal or medical advice. South Carolina law changes, and employers should confirm current requirements with qualified counsel and the primary sources linked above before adopting or modifying a drug testing policy.
