World Cannabis Congress: Canadian workplaces not ready for legal marijuana

Many Canadian workplaces aren't nearly ready for the fast-approaching legalization of marijuana, the World Cannabis Congress has been told.

Jason Fleming, vice-president of human resources for Ontario marijuana producer MedReleaf, says there's still a lack of definitive testing, and many employers have not educated staff on new policies.

The issue was discussed Monday at the congress in Saint John, N.B.

Urine and saliva tests can detect THC, the active ingredient in marijuana, but that doesn't indicate active impairment, and it can take between 24 and 48 hours for THC to clear the system.

Workers can test positive if they've been exposed to second-hand smoke in a poorly ventilated room, according to a recent study at the University of Calgary.

Fleming says companies that routinely throw liquor-fuelled holiday parties now have to grapple with recreational cannabis use.

He says companies will need months to properly write and communicate new policies.