Minnesota THC Legalization Puts Workplace Drug Testing in Limbo

Minnesota employers are on edge about potential liabilities stemming from their drug testing policies in the wake of the state’s recent legalization of consumable products containing the active ingredient in marijuana.

The law, which took effect in July, allows anyone 21 and older to buy edibles and beverages containing up to 50 milligrams of hemp-derived tetrahydrocannabinol, or THC, per package. The measure excludes products with a certain amount of THC from the state’s list of controlled substances.

Unlike other states with new cannabis-related measures, employers in Minnesota didn’t get time to review their drug policies after the law passed ...