Chelsea Hamilton v. Wal-Mart Stores, Inc., 39 F.4th 575

Background

Walmart’s Chino fulfillment center required employees to clock out before passing a security checkpoint located after the timeclock; the checkpoint process (walking, waiting, bag inspection, metal detector) often took significant time and could occur during meal and rest periods.
Hernandez (former Walmart employee, 2016–2018) sued under California’s PAGA asserting five claims: unpaid hours/overtime (off-the-clock), meal-period violations, rest-break violations, late/final-pay violations (waiting-time penalties), and inaccurate wage statements.
Plaintiffs submitted expert reports estimating walking/waiting/security-check time; the district court struck those reports under Rule 26(a) and decertified subclasses tied to the security-checkpoint theory (except a limited meal-break “discouragement” subclass).
The district court dismissed Hernandez’s PAGA claims as unmanageable (relying on a Rule 23-derived manageability concept) and also dismissed remaining PAGA claims as a discovery sanction for allegedly failing to disclose damages estimates under Rule 26(a).
Two class claims proceeded to trial (meal-break discouragement and an alternative-workweek election challenge); the jury returned a large verdict on meal breaks; post-trial motions were denied; appeals followed.
The Ninth Circuit reversed the district court’s dismissal of Hernandez’s PAGA claims and remanded, holding that Rule 23/manageability and Rule 26(a) disclosure do not justify dismissal of PAGA causes of action.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether PAGA plaintiffs in federal court must satisfy Rule 23 class-certification requirements or a Rule 23-derived manageability requirement	Hernandez: PAGA actions are structurally different from Rule 23 class actions and do not require Rule 23 certification or manageability showings	Walmart: PAGA claims should meet Rule 23/manageability (and Erie requires federal courts to apply Rule 23)	Held: No. PAGA is structurally distinct; Rule 23 (including manageability) does not apply; Erie does not create a conflict because PAGA and Rule 23 are reconcilable (Viking River Cruises and Ninth Circuit precedent control)
Whether Rule 26(a) requires disclosure of computations and supporting documents for PAGA civil penalties and whether dismissal was an appropriate sanction	Hernandez: Rule 26(a) compels disclosure of computations of damages only; PAGA civil penalties are statutory penalties (not damages), so Rule 26(a) does not apply	Walmart: Advisory Committee guidance and Rule 26’s purpose cover monetary relief broadly; nondisclosure warranted sanction including dismissal	Held: No. Rule 26(a) targets damage computations for compensatory relief; PAGA penalties are statutory deterrent/punitive penalties, not damages; dismissing PAGA claims was an abuse of discretion

Key Cases Cited

Viking River Cruises, Inc. v. Moriana, 142 S. Ct. 1906 (2022) (SCOTUS: PAGA actions are structurally distinct from Rule 23 class actions)
Canela v. Costco Wholesale Corp., 971 F.3d 845 (9th Cir. 2020) (PAGA and class-action precepts differ; Rule 23 generally inapplicable)
Baumann v. Chase Inv. Servs. Corp., 747 F.3d 1117 (9th Cir. 2014) (distinguishing PAGA from class actions)
Kim v. Reins Int’l Cal., Inc., 9 Cal.5th 73 (Cal. 2020) (California Supreme Court on PAGA’s remedial structure)
Brinker Rest. Corp. v. Superior Court, 53 Cal.4th 1004 (Cal. 2012) (meal-period obligations under California law)
Sakkab v. Luxottica Retail N. Am., Inc., 803 F.3d 425 (9th Cir. 2015) (discussing PAGA’s representative-enforcement role)
Shady Grove Orthopedic Assocs., P.A. v. Allstate Ins. Co., 559 U.S. 393 (2010) (analysis of conflict between state law and Rule 23)
Dietz v. Bouldin, 579 U.S. 40 (2016) (limits on exercise of federal courts’ inherent powers)
Arias v. Superior Court, 46 Cal.4th 969 (Cal. 2009) (PAGA background and purposes)
Saucillo v. Peck, 25 F.4th 1118 (9th Cir. 2022) (PAGA penalties and distribution to aggrieved employees)