Cannabis at work: employer rules in Canada

A common assumption since legalization: if cannabis is legal, surely I can’t be told off for it at work. Not quite. Legalization changed the law, not your employment contract, and the two are different things.

What employers generally can do

• Require you to be unimpaired on the job. Safety-sensitive roles especially can hold you to a fit-for-duty standard.
• Set a workplace policy. Many treat cannabis like alcohol: not during hours, not on premises.
• Act on actual impairment. Showing up affected is grounds for discipline in most workplaces.

What employers generally can’t do

• Punish you for legal use on your own time that doesn’t affect your work, in most cases.
• Ignore the duty to accommodate medical cannabis use, which has human-rights protections like other medications.

The grey area: testing

Random drug testing is limited in Canada and generally needs a strong justification, often tied to safety-sensitive work. And a positive test isn’t the same as impairment, since THC lingers long after the effect fades. See how long it stays in your system.

The short version: legal off the clock, but your job still sets the rules on the clock. Know your workplace policy before you assume.

Sources

• Government of Canada, Cannabis in the workplace