An Alberta ruling tests the limits of employer control over union activity on-site
An Alberta labour board has ruled that a major grocery employer did not violate labour law by banning union campaign buttons from the employer's place of business and investigating three employees. In an addendum decision issued April 13, 2026, Alberta Labour Relations Board Vice Chair William J. Armstrong, K.C. found that Sobeys Capital Incorporated stayed within legal bounds when it prohibited so-called "Second Buttons" worn by employees during an active wage reopener campaign by United Food and Commercial Workers Canada Union, Local No. 401.
The ruling is an addendum to an earlier Board decision, 2024 ALRB 4, issued January 10, 2024. Following that decision, the Union applied to the Court of King's Bench for judicial review. In a decision dated December 11, 2025, the Court identified a gap in the original ruling: while the Board had correctly identified section 148(1)(a)(ii) of the Code as the relevant provision at the outset, it had then conducted its analysis under a different subsection — section 148(1)(a)(i) — and never made findings under section 148(1)(a)(ii), which was the actual basis of the Union's complaint. The Court remitted that specific issue back to the Board while rejecting the Union's other arguments. The matter was returned to the original panel for that determination.
Buttons on the floor, billboards at the door
The dispute arose from a union strategy to turn its own members into campaign tools on the job. UFCW Local 401 planned to have employees wear the "Second Buttons" at the employer's place of business during negotiations tied to a wage reopener, with workers serving as in-store advertisements for its cause.
The employer responded by banning the buttons from its premises and investigating three employees. The union filed an unfair labour practice complaint, arguing the employer had interfered with its right to represent workers.
Under Alberta's Labour Relations Code, the relevant provision — section 148(1)(a)(ii) — has been described as an "omnibus protection for employees against employer interference with their basic Code rights," one that covers "both intentional and unintentional interference." The provision also "operates as a catch-all provision, one that may allow the Board to find a contravention of the Code where there is not another specific section that applies to the conduct in question."
Inside the store versus out in the world
The Board acknowledged that the employer's ban did affect the union's in-store plans. The ruling noted that "the impugned actions of the Employer limited the Union's plan to have employees wear the Second Buttons at the Employer's place of business as 'walking billboards' for the Union's campaign related to the wage reopener negotiations."
But the Board drew a firm line between restricting workplace expression and actually interfering with the union's broader representational function. The ruling found "there is no indication that the Employer's actions affected or otherwise interfered with the Union's exercise of its bargaining agency in collective bargaining or collective agreement administration."
The employer also left the union's public campaign fully intact. The Board further found the employer "did not limit the ability of the Union to have those buttons widely distributed outside the employer's place of business nor did it limit the ability to conduct a public campaign in social media and on television using the commercial."
When enforcing a workplace policy is not an unfair labour practice
The Board grounded its ruling in the legal definition of "representation," which covers "the exercise of all aspects of the union's bargaining agency in collective bargaining and collective agreement administration once bargaining rights have been established." Banning a button campaign inside the workplace fell short of that threshold.
The employer's investigation of the three employees, which the Board described as looking into "a possible violation of its policies," also did not breach the Code. The Board found the union's ability to represent its members in collective bargaining and collective agreement administration remained unaffected.
The Board concluded that the employer's "actions in controlling events within the workplace and in investigating a possible violation of its policies did not breach section 148(1)(a)(ii)."
