Workplace Drug Testing Laws in Tennessee: What Employers Can Do

Federal law does not prohibit private employers from conducting drug tests. The federal government regulates drug testing primarily through the Department of Transportation (DOT) for safety-sensitive transportation positions and through the Occupational Safety and Health Administration (OSHA) for workplace safety. Federal contractors and employers receiving federal grants may be required to conduct drug testing under the Drug-Free Workplace Act of 1988, 41 U.S.C. § 8101 et seq., which mandates a drug-free workplace policy but does not dictate specific testing procedures.

The Americans with Disabilities Act (ADA), 42 U.S.C. § 12101 et seq., restricts certain types of disability-related testing but does not prohibit drug testing for current drug use. The ADA does protect individuals with a history of addiction or those perceived as having a substance use disorder. The Equal Employment Opportunity Commission (EEOC) enforces federal non-discrimination laws related to drug testing. The National Labor Relations Act (NLRA), 29 U.S.C. § 151 et seq., may limit an employer's ability to test unionized employees without union agreement, depending on whether testing is a mandatory subject of bargaining.

The EEOC has jurisdiction over testing that may discriminate based on protected characteristics. For example, testing cannot target employees of a particular race, color, religion, sex, or national origin, nor can it be applied to employees with disabilities differently than non-disabled employees.

Tennessee Code § 50-9-501 through § 50-9-506 establish a comprehensive drug testing framework that is generally more restrictive than the federal baseline, providing employees with greater procedural protections. Tennessee law applies to employers with any number of employees, not just large employers covered by federal discrimination laws.

Unlike federal law, which permits broad employer discretion, Tennessee requires employers to provide written notice before conducting any drug test. This notice must inform employees that testing may be conducted as a condition of employment or continued employment. For pre-employment testing, applicants must receive written notice before the test is administered. For existing employees, reasonable notice is required, though the statute does not define "reasonable" with a specific number of days.

Tennessee's testing procedures are stricter than federal requirements. All initial drug tests must be conducted by a certified laboratory or qualified personnel using approved testing methods. Positive results from initial screening tests must be confirmed by a second test using gas chromatography-mass spectrometry (GC-MS) or an equivalent confirmation method. This two-step confirmation process is more protective than simply relying on initial screen results.

Employees have explicit statutory rights under Tennessee law to request a retest of any positive result within 7 days at their own expense. The employer must inform the employee of this right in writing. The retest must be conducted by an independent laboratory selected by the employee, and the original test split sample must be retained for a minimum of one year for potential further testing.

Tennessee's law covers nearly all employers, regardless of size or industry, unlike federal contractors who may face additional requirements. However, federal contractors remain subject to DOT and federal grant requirements, which may impose stricter protocols. The law applies to pre-employment testing, random testing, reasonable-cause testing, and post-accident testing.

Remedies under Tennessee law include the right to know test results, access to testing records, and the ability to challenge positive results. If an employer violates Tennessee's drug testing statutes, the employee may pursue a civil claim for damages. The statute does not provide for attorney fees or punitive damages, but an employee may claim actual damages resulting from wrongful testing procedures.

Tennessee law does not apply to federal contractors who must comply with Department of Transportation regulations or federal grant recipients required to maintain drug-free workplaces under the Drug-Free Workplace Act, though these federal standards may overlap with state law. Federal safety regulations that mandate drug testing for certain positions—such as commercial driver's license (CDL) holders under 49 C.F.R. § 382—supersede state procedural requirements in those contexts.

Employers may test employees who have a specific, documented reasonable cause or reasonable suspicion of drug use, provided they follow the written notice requirements. Reasonable cause includes direct observation of drug use, erratic or aberrant behavior, physical symptoms consistent with drug use, or circumstances of a workplace accident. However, "reasonable suspicion" is not defined in Tennessee's statute, and courts evaluate whether the employer had an articulable basis for testing.

The Americans with Disabilities Act creates exceptions: employers cannot require drug tests as part of a general medical examination before a conditional job offer is made, and drug tests cannot be used to screen out individuals with a history of substance abuse unless the test specifically measures current drug use. However, testing for illegal drug use is not considered a medical examination under the ADA.

Tennessee law contains no exception for at-will employees, meaning all employees—at-will and contract-based—receive the same statutory protections. Union employees may have additional protections under their collective bargaining agreement, and testing of unionized employees may be a mandatory subject of bargaining. Additionally, if an employer fails to follow the procedures outlined in the statute—such as failing to provide written notice, using non-certified laboratories, or not offering the right to retest—the employer's attempt to terminate an employee based on a positive result may expose the employer to liability for wrongful termination, even in an at-will employment context.

Step 1 — Document Everything: Retain any written notice provided by your employer before testing, including the date, time, and location of the test. Request a copy of the testing procedure, the testing method used, the name and certification status of the laboratory, and the testing facility's chain-of-custody documentation. If you received a positive result, obtain a copy of the initial screening result, the confirmation test result, and any lab reports. Document any statements made by testing personnel or your employer about why you were tested and what procedures were followed. Keep copies of your own medical records if you believe the positive result may be related to a lawful prescription medication.

Step 2 — Understand Your Internal Rights and Compliance: Review your employee handbook or any testing policies your employer provided. Determine whether your employer followed its own stated procedure. If your employer claimed reasonable suspicion, document all circumstances that allegedly triggered testing—when and where it occurred, who directed the test, what behavior or incident prompted it. If random testing was conducted, verify whether the test was truly random or whether you were targeted based on a protected characteristic. Request a meeting with your human resources department or supervisor to discuss the test results and inquire whether the employer intends to take adverse action, such as termination, suspension, or demotion.

Step 3 — Assert Your Statutory Right to Retest: Under Tennessee Code § 50-9-504, you have the right to request a retest of a positive result within 7 days. Provide written notice to your employer immediately, specifying the date of the original test and your request for retest by an independent laboratory at your own expense. Select a certified, independent laboratory that conducts confirmatory testing using GC-MS or equivalent methods. Request that your employer provide the original split sample from your test to the independent laboratory. The original sample must have been retained for at least one year. If your employer cannot locate the original split sample, this may constitute a violation of Tennessee Code § 50-9-502.

Step 4 — File a Complaint with the Tennessee Department of Labor and Workforce Development: If the retest exonerates you or the original testing violated Tennessee's procedural requirements, contact the Tennessee Department of Labor and Workforce Development, Division of Workers' Compensation, which oversees workplace compliance issues. File a written complaint detailing the testing procedure violations, including failure to provide written notice, use of non-certified laboratories, failure to conduct a confirmation test, refusal to allow a retest, or destruction of the original split sample before one year elapsed. Include copies of all documentation from Step 1. The complaint does not have a specific filing deadline under state administrative regulations, but filing promptly strengthens your case.

Step 5 — Consult an Employment Attorney: Contact a Tennessee employment law attorney before taking further action, particularly if your employer has terminated you, suspended you, or threatened adverse action based on drug test results. An attorney can review whether the testing complied with Tennessee Code § 50-9-501 et seq., evaluate whether you have a wrongful termination claim if you were terminated based on a faulty or improperly administered test, and assess whether you have claims for breach of contract, negligent infliction of emotional distress, or defamation if the employer disclosed your test results to third parties. Many employment attorneys in Tennessee offer free initial consultations. An attorney can also represent you in settlement negotiations or civil court if you decide to pursue damages.