Executive Summary: Key Legal and Evidentiary Issues

• The central dispute concerns whether the employer, Rolls-Royce Canada Limitée, was obligated under article 23.03 of the collective agreement to pay the 6% employee pension contribution on behalf of workers absent due to disability under the new target-benefit plan.
• Transitional provisions in article 23.03 incorporated the participation rules of the former defined-benefit plan — specifically article 8.3 — into the new plan chosen by the Union.
• Article 8.3 of the former plan exempted disabled employees from making contributions, but the arbitrator found it imposed no corresponding obligation on the employer to fund those contributions.
• A separate provision, article 23.01 of the collective agreement, capped the employer's financial contributions to the new plan at 10% of eligible payroll, which the court found confirmed the arbitrator's interpretation.
• The applicable standard of judicial review was reasonableness, placing the burden on the Union to demonstrate that the arbitral decision was unreasonable.
• Ultimately, the Superior Court found the arbitrator's decision to be reasonable, intelligible, and consistent with the applicable legal and factual constraints.

Facts of the case

The dispute arose from a change in the pension plan governing unionized employees of Rolls-Royce Canada Limitée. The parties — the Syndicat des travailleuses et des travailleurs de Rolls-Royce Canada-FIM-SCN (the "Union") and the employer — transitioned from an employer-administered defined-benefit plan (the "Former Plan") to a target-benefit plan chosen by the Union (the "New Plan"). This transition was effected through the renewal of their collective agreement, with the changeover taking effect on January 1, 2026. During negotiations, a disagreement arose as to whether the employer was required to pay the 6% employee pension contribution for workers absent due to disability under the New Plan. The employer made its position clear in a letter dated January 30, 2023, transmitted to the Union. Despite the unresolved dispute, the parties signed the new collective agreement on February 13, 2023. On March 15, 2023, the Union filed a grievance seeking a ruling that the employer must assume the 6% employee contribution during periods of disability. An arbitrator rejected the grievance on July 15, 2024, and the Union subsequently filed an application for judicial review on August 14, 2024 before the Quebec Superior Court.

Contractual clauses at issue

Three provisions were central to the dispute. Article 23.03 of the collective agreement governed the transition between the two plans, providing that the concept of "eligible salary" and the rules for employee participation during an absence would be based on the rules then applicable under the Former Plan. Those rules were set out in article 8.3 of the Former Plan — commonly described as an "exemption clause" — which stated that the participating company maintains the participant's plan membership during a period in which the employee receives benefits under a short-term or long-term disability plan, or CSST indemnities; for any other leave, the participating company informs the participant that he may contribute to the plan as if he were working, on an annual basis. The Union argued this language obligated the employer to pay the 6% employee contribution under the New Plan during disability absences. Additionally, article 23.01 of the collective agreement, specifically subparagraph 2 of article 23.01(a), capped the employer's financial contribution to the New Plan at 10% of eligible payroll.

Reasoning and analysis

The Superior Court applied the reasonableness standard of review, consistent with the framework established by the Supreme Court of Canada in Canada (Minister of Citizenship and Immigration) v. Vavilov, 2019 SCC 65. Under this standard, the court's role was not to reassess the evidence but to determine whether the arbitrator's reasoning was justified, transparent, and intelligible. The court found that the arbitrator had correctly followed the interpretive approach set out in Uniprix inc. v. Gestion Gosselin et Bérubé inc., 2017 SCC 43, which requires that a contractual provision be read in light of the entire agreement and the circumstances of its conclusion, even when the text appears clear.

The arbitrator concluded that article 8.3, while exempting disabled employees from contributing, did not impose any obligation on the employer to fund those contributions in their place. Under the Former Plan, the cost of the exemption measure had been borne by the pension fund itself — not the employer — pursuant to the fund's own financing rules. The arbitrator further relied on article 23.01 of the collective agreement, which expressly limited the employer's financial obligations to 10% of eligible payroll, reasoning that accepting the Union's position would effectively raise the employer's contribution to 16% — a result directly contrary to the agreement's plain terms. The court noted that the parties had elected to proceed before the arbitrator solely on the basis of a list of admissions, with an oral hearing held on May 7, 2024, and without calling additional evidence; accordingly, the court declined to conduct a de novo analysis. The court also observed that the Union's choice of a New Plan that did not include a built-in disability exemption mechanism was the source of the underlying difficulty, and that it was not for the employer to bear the consequences of that choice.

Ruling and overall outcome

The Quebec Superior Court, per the Honourable Eleni Yiannakis, J.C.S., dismissed the Union's application for judicial review on June 2, 2026, with costs. The employer, Rolls-Royce Canada Limitée, prevailed as the successful party on all grounds. No specific monetary amount was awarded in the judgment itself; costs were ordered against the Union, but no exact quantum is stated in the decision.