After a workplace accident, many employers require injured workers to submit to a drug test. If that test comes back positive, you may fear that your workers’ compensation claim is automatically over. This is one of the most common concerns injured workers raise when they contact an attorney, and it is understandable. The good news is that under Illinois law, a positive drug test does not automatically disqualify you from receiving workers’ compensation benefits.
The Illinois Workers’ Compensation Act does allow employers to raise what is known as an “intoxication defense,” but the burden of proof is on the employer, and that burden is significant. A recent appellate court decision reinforces the important distinction between testing positive for a substance and actually being intoxicated at the time of an injury.
The Intoxication Defense Under Illinois Law
Under Section 11 of the Illinois Workers’ Compensation Act, an employer may deny benefits if it can prove that the employee’s intoxication was the proximate cause of the injury. This is a critical point that many injured workers do not fully understand. The law does not say that a positive drug test automatically bars your claim. Instead, the employer must establish two things: first, that the worker was actually intoxicated at the time of the accident, and second, that the intoxication was what caused or contributed to the injury.
This means that even if a post-accident drug test reveals the presence of a substance in your system, your employer cannot simply point to the test result and refuse to pay your benefits. Substances like marijuana, for example, can remain detectable in a person’s system for days or even weeks after use, long after any impairing effects have worn off. A positive test tells the employer that a substance was present in your body. It does not tell them whether you were impaired when the accident happened.
What a Recent Illinois Appellate Court Decision Tells Us
In Ramirez v. Illinois Workers’ Compensation Commission, 2025 IL App (1st) 242467WC, the Appellate Court, Workers’ Compensation Commission Division, addressed exactly this issue. The injured worker sustained an injury to his right ankle while working. Following the accident, he submitted to a drug test and tested positive for marijuana. He testified that he had smoked marijuana the day before the accident but was not intoxicated at the time of the injury.
The employer attempted to use the positive drug test to support an intoxication defense. The Arbitrator rejected this argument, finding that there was no evidence that intoxication was the proximate cause of the injury. The Illinois Workers’ Compensation Commission affirmed this finding. On appeal, the Appellate Court agreed, holding that a positive drug test, standing alone, is not sufficient to establish the intoxication defense. The court found that without evidence of the worker’s actual behavior or impairment at the time of the accident, the mere presence of a substance in the worker’s system did not prove that intoxication caused the injury.
This decision reinforces a principle that has long been part of Illinois workers’ compensation law: the employer bears the burden of proving that intoxication, not merely substance use at some prior point in time, was the proximate cause of the workplace accident.
What This Means for Injured Workers
If you have been injured at work and tested positive on a post-accident drug test, you should know that your claim is not automatically denied. The employer and its insurance company must do more than simply produce a positive test result. They must present evidence that you were actually impaired at the time of the accident and that this impairment was what caused your injury.
In practice, this means the employer would need to show things like witness testimony that the worker appeared impaired, erratic behavior before the accident, or other concrete evidence linking intoxication to the incident. Without this kind of evidence, a positive drug test is unlikely to defeat your claim.
This is particularly important in the current legal landscape regarding marijuana. Illinois legalized recreational marijuana use for adults in 2020, and many workers may use marijuana during their personal time without any effect on their ability to perform their jobs safely. Because marijuana metabolites can remain in the body long after the effects have worn off, a post-accident test may detect use that occurred days earlier and had no connection whatsoever to the workplace injury.
Steps to Protect Yourself After a Positive Drug Test
If you are in this situation, there are several things you should keep in mind. First, do not assume that a positive test means your case is lost. Many injured workers give up on their claims prematurely because they believe a positive drug test is an automatic bar to benefits. It is not. Second, be honest with your attorney about the circumstances. The details of when you last used a substance, whether you felt any effects at the time of the accident, and what actually caused the accident are all important facts that your attorney needs to know in order to protect your rights.
Third, understand that the employer’s insurance company may use a positive drug test as leverage to pressure you into accepting a lower settlement or withdrawing your claim entirely. Having an experienced workers’ compensation attorney on your side can make a significant difference in these situations. An attorney who understands the intoxication defense and the burden of proof the employer must meet can push back against these tactics and fight for the benefits you are entitled to receive.
The Importance of Evidence in Intoxication Defense Cases
The Ramirez decision also highlights the importance of the evidentiary record in these cases. The Appellate Court noted that the only evidence of intoxication was the positive drug test itself. There was no testimony from coworkers or supervisors that the injured worker appeared impaired. There was no evidence of erratic or unsafe behavior leading up to the accident. In the absence of such evidence, the positive drug test was insufficient to shift the outcome.
For injured workers, this underscores why it is so important to document the circumstances of a workplace accident as thoroughly as possible. If you were performing your normal job duties, following standard procedures, and the injury occurred due to a workplace hazard or the nature of the work itself, those facts support the conclusion that intoxication played no role in the accident, regardless of what a drug test may show.
If you have been injured at work and are concerned about the effect of a positive drug test on your workers’ compensation claim, the attorneys at The Law Offices of Millon & Peskin, Ltd. are here to help. We represent injured workers throughout the Chicagoland area, including DuPage, Cook, Will, Kane, and Lake counties. A positive drug test does not mean your claim is over. Contact us today at 630-449-3884 for a free consultation to discuss your case and learn about your rights under the Illinois Workers’ Compensation Act.