Canada Post conducted a covert video surveillance investigation into mail theft by employees.
After the investigation concluded and criminal charges were laid, Canada Post dismissed the employees caught on tape.
The union grieved the dismissals.
The arbitrator ruled that under article 10.02 of the collective agreement, Canada Post was required to give notice of alleged misconduct within ten days of identifying an employee on the videotape, and failure to do so precluded reliance on the misconduct for dismissal.
The Divisional Court dismissed Canada Post's application for judicial review.
On appeal, the Court of Appeal held that the arbitrator's interpretation of the collective agreement and his factual finding on when the notice period commenced were not patently unreasonable.
The appeal was dismissed.