3rd Cir.

AFL-CIO v. ENERGY HARBOR NUCLEAR CORP., A

March 23, 2026 ·25-1066 ·Panel Decision ·Bibas · By Maria Santos

The Third Circuit reversed a district court order compelling arbitration in a labor dispute over employee benefit contributions. The appellate court held that the grievance fell outside the scope of the collective bargaining agreement's arbitration clause because the claimed right did not arise from the contract itself.

This case involves a labor dispute between the International Brotherhood of Electrical Workers, Local Union 29, AFL-CIO, and Energy Harbor Nuclear Corporation, which operates a nuclear power plant in Pennsylvania. The parties had a prior benefits dispute in 2021 that was resolved through arbitration, resulting in an award requiring Energy Harbor to pay the union a specific difference in contributions. In 2022, the parties executed a new collective bargaining agreement containing a broad arbitration clause covering disputes regarding the interpretation, application, or operation of the agreement. Later in 2022, the union filed a grievance alleging that Energy Harbor failed to adjust its 2022 health care contributions to satisfy the previous arbitration award. Energy Harbor refused to arbitrate, arguing the grievance concerned the prior award and framework agreements, not the new collective bargaining agreement. The union sued to compel arbitration, and the district court granted summary judgment for the union, ordering the dispute to arbitration. The Third Circuit granted review to determine whether the grievance fell within the scope of the new agreement's arbitration clause.

Writing for the court, Circuit Judge Bibis held that federal law governs the interpretation of collective bargaining agreements, applying general rules of state contract law unless federal labor law conflicts. The court first acknowledged that the arbitration clause in the new agreement was broad, covering 'any dispute or difference' regarding the interpretation or operation of the agreement. Under this breadth, there is a presumption that the dispute is arbitrable. However, the court emphasized that this presumption can be rebutted by 'the most forceful evidence of a purpose to exclude the claim from arbitration.' The court analyzed whether the union's grievance arose from a specific provision of the collective bargaining agreement. The union's grievance relied on Article VIII, Section C.2, which required Energy Harbor to increase its contributions to the union plan by the same percentage as any increase incurred by the company's own health care plan from the previous year. The court found that the record contained no evidence that Energy Harbor increased funding for its own health care plan from 2021 to 2022. Consequently, the dispute could not arise under Article VIII, Section C.2. The court rejected the union's argument that the grievance was merely about the prior arbitration award. The court reasoned that the arbitration award required direct compensation to the union and did not change Energy Harbor's health care plan; therefore, the award was not an 'increase incurred' by the plan. The court clarified that the union's reliance on the contribution-matching provision was 'window dressing' because the right the union claimed flowed from the arbitration award, not the collective bargaining agreement. The court addressed the union's contention that examining the merits to determine arbitrability was impermissible. Citing precedent, the court held that when merits and arbitrability questions are inextricably intertwined, a court may touch incidentally on the merits to determine if the claim falls within the scope of the agreement. The court concluded that the grievance had 'nothing to do with' the rights covered by the collective bargaining agreement because the context of the agreement made clear that the dispute was not about a contractual obligation to match plan increases, but rather about enforcing a prior award. The court distinguished the case from prior decisions where the union asserted a violation of specific CBA provisions, noting that here the union's right did not arise under the agreement at all.

The decision reverses the district court's order compelling arbitration and remands the case with instructions to grant summary judgment for Energy Harbor. This ruling limits the scope of arbitration in labor disputes by clarifying that a union cannot compel arbitration for claims that do not arise from a specific provision of the collective bargaining agreement, even if the arbitration clause is broad. It establishes that courts may examine the merits of a claim when necessary to determine if the dispute falls within the scope of the contract, preventing parties from 'ginning up' access to arbitration by asserting a breach of duties that the contract does not actually impose. The decision leaves open the question of whether the prior arbitration award itself has independent enforceability outside the collective bargaining agreement, as the union did not argue that the award required a lasting increase in contributions under the new contract.