Many Pennsylvania employers find themselves at a crossroads when an employee tests positive for marijuana. As cannabis laws evolve, workplace drug policies must balance employee rights with safety concerns.
A look at Pennsylvania’s medical marijuana law
The Medical Marijuana Act, also known as Act 16, established specific protections for registered patients. It makes it so that employers generally cannot refuse to hire, fire or take other adverse actions against someone based only on their status as a cardholder.
These protections, however, have limits. The law does not require employers to permit cannabis use on company property or during work hours. Employers also retain the right to discipline employees who are under the influence while working, particularly if it affects job performance.
How this law affects drug testing policies
Employers may still require a drug test even for individuals with a medical cannabis prescription. These include random, post-accident or reasonable suspicion testing. The important difference is how the results of the test are used when hiring or making an internal decision.
Another thing that employers need to be careful of is that marijuana is still classified as a controlled substance under federal law. This means that companies who are in federally regulated industries or those with federal contracts may need to enforce stricter drug testing rules to meet federal standards, even if those rules conflict with state protections.
Impairment vs. positive tests
An important distinction is between testing positive for cannabis and being impaired at work. A standard urine test detects THC metabolites, which are byproducts that remain in the body after smoking cannabis and its effect having worn off.
This can create a problem for employers who are trying to assess current impairment, as a positive test result indicates past marijuana use but does not reliably show that an employee is under the influence while at work.
Employers may need to change their drug policies beyond the usual approaches. They may consider exploring alternative testing methods or combining test results with other indicators of impairment. The legal framework emphasizes protecting employees who use medical marijuana responsibly off-duty while still allowing employers to address genuine workplace impairment issues.
Updating workplace policies
In the future, medical cannabis laws and employment policies may continue to grow together. Employers might find it helpful to keep their policies and procedures updated.
During the hiring process, employers can consider identifying which jobs are safety-sensitive and why they involve higher risks. Establishing clear steps for handling positive marijuana tests, including how employees can share their card information, may also help make decisions smoother.
Updating employee handbooks to reflect these protections can also create a more inclusive and consistent workplace. When rules clearly explain both employee rights and employer expectations, everyone has a better understanding of what is required of them. If a business is unsure how to structure these updates or wants to be certain its policies align with current law, consulting an attorney can help guide leadership towards cultivating a workplace that accommodates all employees.
