South Carolina Drug Testing Laws for Employers

South Carolina drug testing laws for employers give private companies broad discretion to test job applicants and current employees, but the tests they use to fire someone, deny a workers’ compensation claim, or contest unemployment benefits have to meet specific procedural standards. There is no single statute that governs private-employer drug testing across the board. Instead, the rules sit in a workers’ compensation premium credit program, an unemployment statute, a workers’ compensation intoxication defense, and federal anti-discrimination law. Get the procedures right and the results are defensible. Skip a step and the same positive test can collapse in court.

When You Can Legally Test

South Carolina does not restrict private employers to a fixed list of testing situations. Four categories cover almost every legitimate reason to test, and each has its own practical rules.

Pre-Employment Testing

No state statute requires pre-employment screening and none prohibits it. Employers can make a passing drug test a condition of any job offer. The main federal constraint is Title VII of the Civil Rights Act, which allows employment tests as long as they are not designed to discriminate on the basis of race, color, religion, sex, or national origin and do not produce an unjustified disparate impact on a protected group.¹ Practically, that means applying the same testing rule to every applicant for the same position.

Random Testing

Random testing is permitted for private employers in South Carolina. If you participate in the workers’ compensation premium credit program, Section 38-73-500(C) requires random sampling of everyone on the payroll, not just safety-sensitive positions.² Whether or not you are in that program, use a genuinely random selection method like a computer-generated list. That protects against later claims that testing was used to target a specific employee.

Post-Incident Testing

Testing after a workplace accident is common and legally defensible when the written policy defines the triggering event in advance. Most policies tie post-incident testing to accidents involving injury requiring medical treatment or significant property damage. Without a clear written trigger, an employee tested after a minor incident has stronger grounds to argue the test was arbitrary. If you plan to deny a workers’ compensation claim based on intoxication, the post-incident test is what you will need to defend.

Reasonable Suspicion Testing

Reasonable suspicion testing requires specific, observable signs that an employee may be impaired. Federal DOT regulations set the practical benchmark that courts and hearing officers use even when the driver rules do not directly apply: the determination must be based on “specific, contemporaneous, articulable observations concerning the appearance, behavior, speech or body odors” of the individual, and those observations must come from a trained supervisor.³

Write it down within 24 hours and have the supervisor who made the observations sign it.³ “Seemed off” is not enough. Bloodshot eyes, the smell of alcohol, slurred words during a safety briefing — those are the kind of details that hold up.

How the Test Itself Has to Be Conducted

How the test is collected and analyzed matters as much as why it was ordered. South Carolina’s unemployment statute lays out procedural standards that, although written for benefit disputes, reflect what an employer should follow across the board. A test that will hold up must meet three conditions:

Collection and labeling by a licensed healthcare professional or another individual authorized under federal or state law.
Analysis at a laboratory certified by the U.S. Department of Health and Human Services Substance Abuse and Mental Health Services Administration (SAMHSA), the College of American Pathologists, or the State Law Enforcement Division.
Confirmation of any initial positive result using gas chromatography/mass spectrometry or an equivalent or more accurate method approved by SAMHSA.

Employers in the premium credit program face additional rules. Section 38-73-500(C) requires that positive results be provided in writing to the employee within 24 hours of the employer’s receipt, and records of each test must be kept for up to one year. A single sample may be split between the initial screen and the confirmatory test.²

Skipping confirmatory testing is where employer programs commonly fall apart. A rapid screen that flags positive is not, on its own, enough to fire someone and survive a legal challenge. Common medications, including certain antidepressants and over-the-counter cold remedies, can trigger false positives on the initial immunoassay screen. The confirmatory step exists for that reason.

Written Policy and Employee Notification

South Carolina does not technically require every private employer to have a written drug testing policy, but running a testing program without one leaves the employer exposed. A written policy is what makes results enforceable in wrongful termination suits, workers’ compensation disputes, and unemployment hearings. Employers in the premium credit program must have one and must document it in the Department of Insurance application.⁴

The policy should spell out what substances are prohibited, when testing occurs, what happens after a positive result, and any available counseling or employee assistance resources. The Department of Insurance’s guidelines say the policy must reflect both the employer’s need for a safe workplace and respect for employee rights — it cannot be purely punitive.⁴

Every current employee and every new hire must receive a clear, readable notice of the program and the employer’s expectations. Post it in common areas and deliver it individually by mail or in person.⁴ South Carolina does not require a signed consent form before testing, but a signed acknowledgment that the employee read the policy shuts down the “I didn’t know” defense.

The Workers’ Compensation Premium Credit

The biggest financial incentive to formalize a drug testing program is the merit-rating credit under South Carolina Code Section 38-73-500. Employers who maintain a certified drug prevention program qualify for a credit of at least five percent on their workers’ compensation premium. If the Director of Insurance finds five percent is not actuarially sound, a smaller credit may be set instead.² Certification requires a written substance abuse policy statement and employee notification procedures consistent with Section 41-1-15.

The certification runs through the South Carolina Department of Insurance, and the program must be recertified each year. Lose certification and you lose the credit.⁴ This is a distinct program from the state Drug-Free Workplace Act discussed below, which applies only to certain contractors.

Denying a Workers’ Compensation Claim After a Positive Test

Under South Carolina Code Section 42-9-60, no workers’ compensation benefits are payable if the employee’s injury or death was caused by intoxication.⁵ The burden of proof falls on the party claiming intoxication, meaning the employer or its insurer must show both that the employee was intoxicated and that the intoxication caused the injury. A positive drug test by itself does not automatically meet that burden. You have to connect the result to actual impairment at the time of the accident.

This is where testing procedure pays off. A test administered hours after the incident, or one with a flawed collection and confirmation process, gives the employee grounds to challenge the denial. A well-timed post-incident test performed by a certified lab with proper chain of custody is far harder to overturn than a rapid screen run informally.

Unemployment Benefits After a Drug-Related Firing

South Carolina law addresses unemployment eligibility after a drug-related termination directly. Under Section 41-35-120(3), an employee discharged for illegal drug use is disqualified from unemployment benefits if the employer communicated a policy prohibiting illegal drug use and the employee either failed or refused to provide a specimen, submitted an adulterated sample, or tested positive on a properly conducted test. The disqualification lasts until the employee finds new work and earns wages equal to at least eight times their weekly benefit amount.

For the disqualification to stick, the test must meet the same standards described earlier: licensed collection, SAMHSA-certified or equivalent lab analysis, and confirmation of the initial positive through gas chromatography/mass spectrometry or a comparable method. Skip a step and the employee has grounds to challenge the benefit denial.

Marijuana in South Carolina Workplaces

Marijuana remains illegal in South Carolina for both recreational and most medical purposes. The only exception is Julian’s Law, which permits a narrow CBD treatment containing at least 98 percent cannabidiol and no more than 0.9 percent THC, available only to patients with severe forms of epilepsy.⁶ Broader medical cannabis legislation, the South Carolina Compassionate Care Act, was introduced as Senate Bill 53 in January 2025 but had not been enacted as of early 2026.

Because marijuana is still a Schedule I controlled substance under federal law, the Americans with Disabilities Act does not require employers to accommodate its use. Courts have consistently held that employees currently using illegal drugs are not protected by the ADA, and claims for failure to accommodate medical marijuana have been routinely dismissed. South Carolina employers can test for marijuana and act on positive results without an ADA concern.

Confidentiality of Test Results

South Carolina does not have a dedicated statute governing the confidentiality of private-employer drug test results. A common misconception is that HIPAA fills that gap. It generally does not. HIPAA applies to covered entities like health plans, healthcare clearinghouses, and healthcare providers. An employer who orders a drug test and receives the results is not a HIPAA-covered entity in that transaction. Federal transportation authorities have said drug and alcohol testing information “differs significantly from health information covered by HIPAA rules.”⁷

That does not mean you can share results freely. Disclosing an employee’s positive test to coworkers, clients, or anyone without a legitimate business need creates exposure to invasion of privacy and defamation claims under South Carolina common law. Store results separately from general personnel files, limit access to HR and the direct decision-maker, and get written employee consent before sharing results with an insurer or agency.

State and Federal Drug-Free Workplace Acts

Employers bidding on South Carolina state contracts or grants worth $50,000 or more face a separate set of rules under the Drug-Free Workplace Act, codified at Title 44, Chapter 107. These employers must certify that they will publish a statement prohibiting controlled substances in the workplace, establish a drug-free awareness program, and require employees to report any drug-related criminal conviction within five days.⁸

Federal grantees face parallel requirements under the federal Drug-Free Workplace Act of 1988. Those include publishing and distributing a drug-free workplace statement, running an ongoing awareness program on the dangers of drug abuse and available counseling resources, and requiring employees to notify the employer within five calendar days of any workplace drug conviction. The employer must then notify the granting agency within 10 calendar days. Non-compliance can result in suspension or debarment.⁹

Neither the state nor the federal Drug-Free Workplace Act requires drug testing. They require a drug-free workplace policy and awareness program. The testing requirements come from the premium credit program under Section 38-73-500 and from any additional policies you adopt voluntarily. Employers pursuing state contracts sometimes conflate the two programs, which creates compliance gaps in one or both.

What Happens When Compliance Slips

An employer who fires someone based on a poorly conducted drug test faces a wrongful termination claim. South Carolina is an at-will employment state, so employers can generally end an employment relationship for any reason. But terminations that violate the employer’s own written policy, breach a contractual agreement, or disproportionately affect a protected class can be challenged.¹ Internal consistency is where employers most often stumble. If the policy says employees get a chance to explain a positive result and the employer skips that step, the termination is vulnerable regardless of whether the test itself was accurate.

Compliance failures also put the premium credit at risk. The Department of Insurance requires annual recertification, and a lapsed program means losing the credit going forward.⁴ And flawed procedures can undo a workers’ compensation claim denial. If you deny benefits under Section 42-9-60 based on intoxication but cannot prove the test was properly collected, analyzed at a certified lab, and confirmed, a court can overturn the denial and award full benefits to the injured employee.⁵

1
U.S. Equal Employment Opportunity Commission. Employment Tests and Selection Procedures
2
South Carolina Legislature. South Carolina Code 38-73-500 – Merit Rating for Workers’ Compensation Insurance; Credit; Testing
3
eCFR. 49 CFR 382.307 – Reasonable Suspicion Testing
4
South Carolina Department of Insurance. Application for Drug- and Alcohol-Free Workplace Premium Credit Program
5
South Carolina Legislature. South Carolina Code 42-9-60 – Injury or Death Occasioned by Intoxication or Willful Intention of Employee; Burden of Proof
6
South Carolina Legislature. 2025-2026 Bill 53 – Compassionate Care Act
7
Federal Transit Administration. Drug and Alcohol Testing – DOT HIPAA Responses
8
South Carolina Legislature. South Carolina Code of Laws Title 44 Chapter 107 – The Drug-Free Workplace Act
9
U.S. Department of Labor. Drug-Free Workplace Regulatory Requirements – Training and Employment Information Notice No. 15-90