What happened
The Supreme Court considered an Alberta mine's drug and alcohol policy after an employee tested positive following an accident. The majority upheld the human-rights tribunal's conclusion that the employee was terminated for breaching the policy rather than because of his addiction, so prima facie discrimination was not established on the tribunal's findings.
Why it matters
Leading Supreme Court authority at the intersection of addiction, workplace drug policies, safety and disability discrimination.
Source
Verified against the linked primary source: Supreme Court of Canada.