ERISA Recap: 6 Important Rulings From July

July 2026 delivered a consequential set of Employee Retirement Income Security Act (ERISA) decisions that will shape litigation strategy and risk management for plan sponsors and institutional asset managers. The Ninth Circuit's rejection of a fund manager's arbitration petition in a 401(k) suit represents a notable expansion of litigation risk for asset managers handling retirement plan assets. By denying the compulsory arbitration bid, the court preserved the plaintiff's right to pursue claims in federal court, signaling judicial skepticism toward broad arbitration clauses in employee benefit contexts and potentially exposing plan managers to class-action exposure in high-stakes disputes.

Simultaneously, a district court tossed a pension de-risking lawsuit, eliminating a legal challenge to one of the most common risk-transfer strategies used by plan sponsors managing defined benefit liabilities. De-risking transactions—typically structured as annuity buyouts or longevity swaps—allow sponsors to reduce actuarial exposure and volatility. The dismissal provides legal clarity that plan sponsors can execute these strategies without litigation risk on the merits, though it does not eliminate challenges to specific transaction structures or disclosure adequacy.

The D.C. Circuit's reversal of a $13 million withdrawal liability award to a union pension fund carries the most significant implications for multiemployer plan (MEPP) participants and sponsors. Withdrawal liability—the obligation a departing employer must pay to a multiemployer plan—is a critical funding mechanism for collectively bargained plans. The reversal narrows plan sponsors' ability to recover these liabilities and suggests courts are applying heightened scrutiny to withdrawal liability calculations, potentially reducing collection certainty for underfunded MEPPs and complicating exit planning for withdrawing employers.

Collectively, these six rulings reflect judicial intervention across three critical ERISA domains: plan governance and asset management, benefit design and de-risking, and multiemployer plan funding and sustainability. Plan sponsors and institutional investors managing retirement obligations should monitor these developments closely, as they establish precedent affecting dispute resolution, transaction structure, and withdrawal liability exposure—all material factors in pension risk management and alternative investment strategies tied to retirement assets.