My Employee Failed a Drug Test: What Happens Now?
An employee’s drug test came back positive. What you do next depends on several factors: your written drug and alcohol policy, the substance involved, your industry, your state’s laws, and whether the ADA may be relevant. This is more nuanced than it used to be.
Start With Your Written Policy
The first question is: what does your drug and alcohol policy say? A well-written policy defines what substances are prohibited, what testing circumstances apply (pre-employment, random, post-accident, reasonable suspicion), and what the consequences of a positive test are.
If your policy states that a positive test results in immediate termination, and the employee signed and acknowledged that policy, your path is clearer, though still not without nuance. If your policy is vague or silent on consequences, you have more discretion but also more exposure.
The Marijuana Complication
Marijuana is the substance where drug testing policy has become most complicated. As of 2026, marijuana is legal for recreational use in a significant number of states. Several states have enacted specific employment protections for off-duty marijuana use, restricting employers’ ability to discipline or terminate employees solely based on a positive marijuana test.
States including California, New York, New Jersey, Illinois, Minnesota, and others have enacted various levels of protection for employees who use marijuana legally outside of work. The specifics vary: some states prohibit adverse action based solely on a positive test for marijuana metabolites (which can remain detectable for weeks after use); others require evidence of impairment at work.
If you operate in a state with marijuana employment protections, consult with HR or employment counsel before terminating solely based on a positive marijuana test.
Safety-Sensitive Roles
The analysis is different for employees in safety-sensitive roles. Federal regulations, including DOT regulations for commercial drivers, mandate drug testing and define consequences for positive tests regardless of state law. Employees subject to federal drug testing requirements are not protected by state marijuana employment protection laws.
If the employee operates a vehicle, works with heavy machinery, or is in another safety-sensitive role, your obligations and your latitude are defined by the applicable regulatory framework.
The ADA and Substance Use Disorders
Current illegal drug use is not protected under the ADA. However, employees who are in recovery from substance use disorders (and who are not currently using) may have ADA protections. Similarly, alcoholism is a recognized disability under the ADA.
If an employee discloses a substance use disorder in connection with a positive test and requests leave for treatment, you may have an obligation to engage in the accommodation process before terminating, particularly if this is a first occurrence. This is one of those situations where an employment attorney’s guidance is worth the cost of an hour of their time. The accommodation process here follows the same framework as any other disability-related request. The same principles that apply to pregnancy and medical leave situations apply here too, as outlined in My Employee Just Told Me They're Pregnant: What Do I Need to Know?.
A Reasonable Response Framework
For a first positive test in a non-safety-sensitive role, many employers consider:
• A written warning with a last chance agreement: a document stating that any future positive test will result in immediate termination
• A mandatory referral to an Employee Assistance Program (EAP) if you have one
• Unpaid leave to attend treatment if the employee requests it
• More frequent testing for a defined period
For safety-sensitive roles or repeat violations: termination is typically appropriate and often required.
Whatever you decide, document your reasoning and apply it consistently across employees in similar situations. If termination is the outcome, make sure your separation process is airtight. How to Conduct a Termination Meeting walks through exactly what that looks like.
A clear progressive discipline policy that addresses drug and alcohol violations, including which offenses result in immediate termination, gives you the framework you need to respond consistently.
Frequently Asked Questions
Can I Give an Employee a Second Chance After a Failed Drug Test? Yes, but whether you should depends on your written policy, the substance involved, the role, and whether this is a first or repeat occurrence. For a first positive test in a non-safety sensitive role, a second chance structured around a last chance agreement is a reasonable and common approach. The agreement documents that the employee received a positive result, acknowledges the company policy, and states explicitly that any future positive test will result in immediate termination. Both parties sign it. This creates a clear record and a defensible position if a future termination is ever challenged. For safety-sensitive roles like commercial drivers, equipment operators, anyone subject to DOT or other federal testing requirements, a second chance may not be within your discretion. Federal regulations define the return-to-duty process, which involves a substance abuse professional evaluation, treatment if recommended, a return-to-duty test, and follow-up testing. You do not get to skip or modify those steps. For a repeat positive test after a last chance agreement, termination is the appropriate and well-documented outcome.
How Quickly Can You Retest an Employee After a Failed Drug Test? Retesting timelines depend on the purpose of the retest. There are two distinct situations. The first is a confirmation retest of the original specimen. If the employee disputes the result of the initial test, most testing protocols allow for the original specimen to be sent to a separate certified laboratory for confirmation testing. This happens quickly (typically within a few days) and uses the same sample rather than a new one. This is the appropriate first step if the employee contests the result. The second is a return-to-duty or follow-up retest after a period of treatment or leave. This is a new test administered after the employee has completed whatever return-to-duty process your policy or applicable regulations require. The timing here is not a fixed rule, so it is defined by your policy or, for federally regulated positions, by the applicable regulatory framework. Do not retest as a substitute for addressing the original positive result. A negative retest does not retroactively make the first positive result go away, and treating it that way creates inconsistency in how you apply your policy.
Does a Failed Drug Test Go on the Employee's Record? For most private-sector employment situations, a failed drug test is not reported to any external database or government record. It stays within your organization's personnel file. There is no national employer drug test registry that tracks individual results across jobs. The exception is federally regulated industries. Commercial drivers who test positive under DOT regulations are reported to the Drug and Alcohol Clearinghouse which is a federal database that future employers in the regulated transportation industry are required to query before hiring. A positive result in that system follows the employee within the industry until the return-to-duty process is completed and documented. For employees in non-regulated roles, the practical answer is that the failed test exists in your records and may come up if you provide a detailed employment reference, but it does not follow them the way a criminal record would.
Is It Better for an Employee to Resign Than Fail a Drug Test? This is a question employees sometimes ask or search for on their own and occasionally raise directly with a manager after receiving a positive result. The honest answer for them is: it depends on what they are trying to protect, and neither option is without consequence. Resigning before a termination keeps the termination off their record and gives them some control over how they describe the departure. However, it typically makes them ineligible for unemployment benefits, since voluntary resignations generally do not qualify. It also does not erase the fact that a positive test occurred. If your records show a positive test and a same-day resignation, a future employer doing a thorough reference check may draw their own conclusions. Termination for a positive drug test, depending on the circumstances, may allow the employee to collect unemployment in some states, particularly if it was a first offense and your policy did not clearly specify termination as the mandatory outcome. From your perspective as the employer, you should not coach an employee toward resignation as a way to avoid documenting a positive test. Apply your policy, document the outcome, and let the employee make their own decision about how to respond.
What Do You Actually Say to an Employee When Delivering a Positive Result? The conversation is brief, private, and factual. Have HR or a second manager present. The structure is straightforward. State the result directly: "Your drug test came back with a positive result for [substance]." Reference your policy: "Our policy requires [state the specific consequence like a written warning, last chance agreement, termination, or whatever applies]." Give the employee a moment to respond. They may dispute the result, in which case explain the confirmation testing process. They may disclose a medical situation or substance use disorder, in which case note it and tell them you will follow up on next steps rather than making a decision on the spot. Avoid extended debate about the fairness of the test, the detection window for marijuana, or whether they were impaired at work. Those conversations can happen through the confirmation testing process or with HR. The meeting is to communicate the result and the next step, not to litigate it. Document the conversation the same day: who was present, what was communicated, what the employee said in response, and what the next steps are.
What If the Employee Says the Positive Result Is From Legal Marijuana Use? This is the most common response to a positive marijuana test, and how you handle it depends entirely on your state. In states with employment protections for off-duty marijuana use, including California, New York, New Jersey, Illinois, Minnesota, and several others, a positive test for marijuana metabolites alone may not be sufficient grounds for adverse action. Some of these states require evidence of actual impairment at work, not just a positive test result. If you operate in one of these states and your policy has not been updated to reflect current law, do not act on the result until you have consulted with HR or employment counsel. In states without those protections, your written drug and alcohol policy governs. If the policy clearly prohibits marijuana and defines the consequence for a positive test, and the employee acknowledged that policy, the fact that their use was legal under state law does not automatically override your policy, particularly if the policy was communicated clearly and applied consistently. For safety-sensitive and federally regulated roles, state marijuana protections do not apply. Federal law controls and marijuana remains a prohibited substance regardless of state legality.
Can You Require a Drug Test After a Workplace Accident? Yes, in most cases, provided your written policy authorizes post-accident testing and the testing is conducted consistently. Post-accident testing is one of the most common and legally defensible testing circumstances because the connection between the test and a workplace safety event is clear. Best practices for post-accident testing: define in your policy what constitutes a triggering event (injuries requiring medical treatment, accidents involving property damage above a threshold, near-miss incidents involving safety risk), conduct the test as promptly as possible after the incident, and apply the post-accident testing trigger consistently across employees in similar situations. Be aware that OSHA has taken enforcement positions against blanket post-accident drug testing policies that are so broad they could deter employees from reporting injuries. Your policy should be tied to a reasonable nexus to safety, not applied automatically to every minor incident.
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