The Great Marijuana Expansion: Next Steps For Your Company

You can now add California, Maine and Vermont to the list of states that have legalized the sale of recreational marijuana. 

Although 29 states and the District of Columbia currently have laws legalizing marijuana in some form, California is the largest to legalize recreational marijuana. As of January 1, adults over the age of 21 in the Golden State can legally consume marijuana on private property, can buy up to an ounce of cannabis and can grow as many as six plants at home.

With the new law now in effect, many are wondering how this will affect drug testing at workplaces. Can employees now be fired or not hired if marijuana is detected in their system? The short answer: Yes. Although California’s Proposition 64 allows people the right to light up, it also states that employers can still test workers for marijuana use before hiring them or anytime throughout their tenure with the company. If the worker tests positive and it violates company policy, the employer can choose to let the employee go – even if there’s no indication that person was high on the job. However, the laws differ from state to state, so it’s a good idea to familiarize yourself with the guidelines for your area.


  • Review your company’s policy regarding drug use and see if any changes are needed.
  • Keep local and federal laws in mind, since those can impact how and when drug tests take place.
  • Make workers aware of your policies, even if nothing has changed.
  • Enforce policies consistently to avoid liability.
  • Educate workers about how marijuana works in the body.


Since 2012 when marijuana became legalized in Colorado, our data indicates the positivity rate for employees in that state increased each year except in 2015. That year there was a major downturn in the oil and gas industry, which represents a considerable portion of DISA’s customer base in Colorado. We can conclude because of the slump in the O & G industry, there were less employees to test randomly, and there were fewer new hires taking pre-employment drug screening tests.

However, throughout the remainder of the US, the positivity rate has decreased since 2012. 



In 2016, drugged driving surpassed drunken driving for the first time. The U.S. Department of Transportation prohibits marijuana use for any safety sensitive employee, regardless of whether it’s legal to consume marijuana in the driver’s home state. Recently, the California Trucking Association issued a reminder to all current and prospective commercial drivers that the federal law prohibiting marijuana use is still in effect, despite Proposition 64. That means if a driver consumes marijuana in a state that allows recreational or medicinal marijuana, he/she is still prohibited under federal law to use the drug while employed as a driver and will be held accountable.

James Stanley, DISA Transportation Sales Director has this reminder. “Trucking companies need to make sure their policies on marijuana are communicated effectively to avoid confusion. Employers have a right to have a drug-free workplace.”


For more than 30 years, DISA has been a provider of workplace safety and compliance services. DISA helps companies make more informed staffing decisions by offering a broad array of industry-leading methodologies to make employee screening faster and more accurate. For more information about DISA call 1-800-752-6432 or email