With a majority of U.S. states enacting medical marijuana laws, cannabis in the workplace has become a hot-button issue for human resources departments seeking to craft appropriate workplace regulations for lawful cannabis users. These issues become particularly tricky for employers to navigate because cannabis remains illegal under federal law, and each state has different laws addressing the treatment of medical marijuana users in the workplace.
Recently, states with medical marijuana programs have trended towards providing protection under disability laws to employees who are registered as patients in that state’s medical marijuana program. Employers with overly draconian cannabis and drug testing policies may face significant legal risk from employees who are penalized for their medical marijuana use.
The recent case of Whitmire v. Wal-Mart Stores, Inc. from the federal District Court of Arizona, may be a bellwether for how states will treat medical marijuana use in the workplace. In that case, the Court found that Walmart could not fire an employee under a theory that she may have been impaired at work merely because marijuana metabolites were found in her urine. Notably, the affected employee was a medical marijuana card holder for approximately five years who claimed to only smoke before bed, never using at or before work. The Court found that Arizona’s Medical Marijuana Act prevented adverse employment action based solely on the presence of marijuana in a lawful user’s system. Instead, the employer would need to demonstrate through expert testimony that the employee was impaired at work; a much higher burden.
Other jurisdictions have reached similar conclusions when evaluating claims of adverse employment action against medical marijuana users. For instance, Barbuto v. Advantage Sales and Marketing, LLC reaffirmed Massachusetts’ protections for medical marijuana users who can perform their essential job functions without impairment. Similar to the Arizona case, the employee at issue used medical marijuana only at night and never during work hours – a critical distinction at this nascent juncture for how Courts address employees treating with medical marijuana.
Other states are moving in this direction as well, with Rhode Island Courts finding that prospective employees cannot be denied employment if they are holders of a medical marijuana card and would fail a pre-employment drug test, and the New Jersey legislature is considering a bill that would provide protection to medical marijuana cardholder employees.

Staying ahead of new cannabis laws CBD

Notably, employers may be able to use an applicant’s criminal record for cannabis-related convictions as a basis for refusing to hire an employee—provided the employer does not issue a complete bar on hiring reformed convicts. This is subject to the laws applicable to that jurisdiction related to criminal convictions in employment contexts.
An important takeaway from the above is that marijuana protections generally only apply to its medical use, not to recreational users in legalized states. Indeed, the type of carve-outs which protected the Arizona employee from termination specifically do not provide protection in circumstances wherein the employee possesses, uses or is impaired at the workplace.
Thus, at this early stage of cannabis legal precedent, employers need not concern themselves with testing for the extent of impairment at work, as an employee who partakes at work or is impaired to any degree is subject to appropriate discipline as a result of that conduct. Most states with medical marijuana programs explicitly provide that employers need not tolerate employees who are “under the influence” at work, therefore drawing a clear line between preventing discrimination against medical marijuana users and accommodating” the use of medical marijuana, particularly on-site or during work hours.
With these principles in mind, multi-state employers will need to ensure their cannabis policies are flexible to adapt to developing guidance from the Courts. Furthermore, employers in states where medical marijuana is legal should avoid so-called “zero tolerance” policies—unless the employer is a federal contractor—which could lead to litigation if improperly applied to employees protected by a state’s medical marijuana program.
Policies that focus on impairment rather than an outright ban on marijuana use are generally favored. Employers should ask medical-marijuana-using employees to acknowledge they will not consume the product during work hours or onsite and will not perform work functions while impaired. Furthermore, employers must consider the scope of the employee’s job functions and proactively examine whether a safety risk would arise if an employee treating with medical marijuana is permitted to perform certain job functions.
Many employers are concerned with their own liability for any misconduct an employee may engage in while under the influence of cannabis. Notably, each state has different laws imposing different standards governing the employee/employer relationships in this context. Preliminarily, employers should be careful to restrict employees who are medical marijuana users from performing tasks that create significant safety hazards. Generally speaking, an employer will be liable for the actions of an employee who is acting within the scope and course of his or her employment at the time of the misconduct.
Although this a developing area of law, employers can look to the laws of their state, and particularly how they’ve treated similar circumstances such as employees under the influence of alcohol, to determine the likelihood that the employer can be held liable for an employee’s misconduct while under the influence of cannabis.
Furthermore, although some employers may be concerned about absenteeism or similar problems in a state with medical cannabis, recent studies have shown as much as an approximately 10% drop in sick leave taken and absenteeism in states with less restrictive medical cannabis laws. While more research is needed, it appears that employers should not be overly concerned with an increase in absenteeism as a result of cannabis legalization.
Importantly, it is critical for employers to ensure that their policies relating to cannabis and drug testing, including policies related to hiring and retention of medical cannabis users or cannabis related criminal offenders, are compliant with applicable state laws and that these policies are clearly and fully explained to all employees.
Joshua S. Bauchner, Esq. is a shareholder with the firm of Ansell Grimm & Aaron, PC, where he serves as co-chair of the Litigation Department and head of the Cannabis Law Practice Group. Anthony D’Artiglio, Esq. is a litigation associate with the firm.