Court of Appeal clarifies that FMCSA preemption of break rules applies retroactively to PAGA claims: Dieves v. Butte Sand Trucking Co.

In Dieves v. Butte Sand Trucking Co. (2025) 116 Cal.App.5th 1129, the Court of Appeal (Third Appellate District) held that the Federal Motor Carrier Safety Administration’s (FMCSA) preemption of California’s meal and rest break rules applies retroactively, and affirmed that trial courts may not strike PAGA claims solely for lack of manageability.

Plaintiff, a truck driver, filed a putative class action and representative PAGA claim alleging that Defendant required on-duty meal breaks without pay, discouraged rest breaks, and failed to reimburse expenses. The trial court denied class certification for lack of commonality and subsequently struck the PAGA claim on manageability grounds, citing the need for individual testimony from 75 witnesses. The trial court also found that federal law preempted the claims. Plaintiff appealed both the certification denial and the order striking the PAGA claim.

The Court of Appeal affirmed in part and reversed in part. In the published portion of the opinion, the court held that the trial court erred by striking the PAGA claim based on manageability. It noted that the trial court’s reliance on Wesson v. Staples (2021) 68 Cal.App.5th 746 was improper following Estrada v. Royalty Carpet Mills, Inc. (2024) 15 Cal.5th 582, which established that trial courts lack inherent authority to strike PAGA claims on manageability grounds. The court also rejected Defendant’s argument that striking the claim was necessary to preserve its due process rights, finding no inherent constitutional violation in allowing the representative action to proceed. 

However, the court’s analysis of federal preemption significantly aligns California jurisprudence with federal standards. While Garcia v. Superior Court (2022) 80 Cal.App.5th 63 previously held that FMCSA preemption was prospective only, the Dieves court chose to follow the Ninth Circuit’s reasoning in Valiente v. Swift Transp. Co. of Ariz., LLC (2022) 54 F.4th 581. By adopting the Valiente standard, the court acknowledged that the FMCSA’s authority under the Motor Carrier Safety Act allows the agency to void state laws that impose an unreasonable burden on interstate commerce, effectively barring MRB claims retroactively. Because the viability of the PAGA claim now hinges on whether the drivers were actually subject to federal hours-of-service (HOS) rules, the court remanded the case for consideration of whether the specific nature of the drivers’ work falls within the scope of federal regulations.

Full opinion

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