By Daniel Spencer
Duane Morris Takeaways: In Haley, et al. v. Delta Air Lines, Inc., No. 1:21-CV-1076 (N.D. Ga. Aug. 7, 2026), Judge Sarah E. Geraghty of the U.S. District Court for the Northern District of Georgia certified a Rule 23(b)(2) injunction class and a Rule 23(b)(3) damages class of Delta pilots who serve in the U.S. Armed Forces. The pilots allege that Delta violated the Uniformed Services Employment and Reemployment Rights Act (USERRA) by paying for jury duty, bereavement, and sick leave, but not short-term military leave. The court held that USERRA’s “comparability” inquiry can be decided on classwide proof and predominates over individual notice and damages questions. The ruling is required reading for any employer whose leave policy pays for some short-term absences but not military leave.
Case Background
The plaintiffs are current and former Delta pilots who served in the military while also working for the airline. Their jobs are governed by a collectively bargained “Pilot Working Agreement” (PWA). Since at least 2007, the PWA has paid pilots when they’re out for jury duty, bereavement, or illness – but not when they’re away on short-term military leave of 30 consecutive days or fewer. The plaintiffs say that’s exactly what USERRA forbids. Under Section 4316(b), employees on military leave are entitled to the same non-seniority rights and benefits the employer generally gives similarly situated employees who are on furlough or some other leave of absence.
Getting to class certification was no quick trip. The court denied Delta’s motion to dismiss back in March 2022. Then, in December 2025, it denied the plaintiffs’ first motion for class certification on standing and procedural grounds. Among other problems, neither named plaintiff had standing to seek injunctive relief – and the court doubted that Benjamin Best, who at that point was only an absent putative class member, could fix that. So, the plaintiffs amended their complaint to add Best, a Delta pilot and a Major in the Michigan Air National Guard, as a named plaintiff. In January 2026, they tried again, asking the court to certify two classes, including:
- a Damages Class of all current and former Delta pilots who took military leave of 30 consecutive days or fewer from April 30, 2007, to the date of judgment, as reflected in Delta’s military leave data; and
- an Injunction Class of all pilots currently employed by Delta who are also currently members of the uniformed services.
The Court’s Decision
The court granted class certification of both classes. It also denied without prejudice the plaintiffs’ motion to partially exclude the opinions of Delta’s expert, Dr. Darin Lee.
On the plaintiffs’ Daubert challenge, the court agreed with a central part of Delta’s reading of USERRA: one continuous period of military service should be measured from its start date to its end date, even if the pilot reported it to Delta as several shorter leaves. As a result, the court did not exclude Dr. Lee’s opinion that Delta’s self-reported leave data was unreliable for that reason. The court was skeptical of Dr. Lee’s “substantial heterogeneity” opinions. It noted that he never defined the term and never calculated statistical measures such as variance or standard deviation. It nonetheless found those opinions had “little, if any, bearing” on certification and left the admissibility question “for another day.”
On ascertainability, Delta argued that because pilots often underreported their military leave, the start and end dates of each leave – and therefore class membership – could not be determined. The court held that this argument went to administrative feasibility, not ascertainability. It added that the military’s “Point Credit Accounting and Reporting System” (PCARS) records could be used to verify the leave that pilots had reported. Delta attacked the reliability of PCARS, but it identified only a single one-day discrepancy between Best’s PCARS records and his military flight logs. That was not enough. The court said it would require “more than a single, one-day discrepancy before broadly holding official military service records unreliable.”
On the Rule 23(a) requirements, numerosity was undisputed. The plaintiffs’ expert identified 119,285 instances of short-term military leave taken by 3,361 pilots, and approximately 669 current pilots were serving in the military. As to commonality, the court relied on Delta’s uniform leave policy. It held that whether short-term military leave is “comparable” to paid forms of leave would “almost exclusively drive the resolution of Delta’s liability.” As to typicality, Delta argued that Best routinely gave insufficient advance notice of his military leave. The court rejected that argument. It reasoned that USERRA requires some advance notice but “does not require notice of a particular length.” It also noted that Delta failed to cite “a single court decision in any jurisdiction” recognizing insufficient notice length as a defense. The court further observed that Best’s practice of waiting to see his flight schedule before notifying Delta may in fact be typical of other pilots. As to adequacy, the court held that the plaintiffs’ strategic choice to limit the class to leave recorded in Delta’s data did not create a fundamental conflict within the class.
On the Rule 23(b)(2) injunction class, Delta invoked Wal-Mart Stores, Inc. v. Dukes, 564 U.S. 338 (2011), arguing that the requested injunction was really about money and was an improper “follow-the-law” injunction. The court disagreed on both points. It held that the requested injunction would change Delta’s uniform policy and benefit every class member in the same way. It also held that the injunction was specific enough because it would tie pay for short-term military leave to whatever forms of leave the factfinder finds comparable. The court endorsed the “hybrid” structure of a (b)(2) injunction class alongside a (b)(3) damages class. It explained that the injunction class seeks only prospective relief, not backpay. The court also noted that Delta could comply with an injunction by ending pay for the comparable leave rather than paying for military leave, because “USERRA mandates only equality of treatment.”
On the Rule 23(b)(3) damages class, predominance was the core of the ruling. Under the Eleventh Circuit’s decision in Myrick v. City of Hoover, 69 F.4th 1309 (11th Cir. 2023), comparability turns on three factors: the duration of the leave, its purpose, and the employee’s ability to choose when to take it. The court found that each factor could be resolved on classwide proof.
As to duration, flaws in Delta’s leave data “go to the weight of the data, not whether it can serve as common proof.” Any mismeasured leave periods can be corrected at the damages stage.
As to purpose, Delta did not appear to dispute that the factor could be decided on common proof. The court also noted that other circuits have treated military leave and jury duty as sharing a common purpose of civic duty.
As to control, the defense lost its most significant battle. Delta presented testimony showing that pilots’ ability to schedule their military duty varied, with some able to swap flights or influence assignments and others not. The court held that USERRA’s regulations compare “forms” or “types” of leave at “a higher level of generality” rather than “at the granular level of every individual instance of leave.” In the court’s view, the instance-by-instance approach Delta urged would make the comparability inquiry “a dead letter.”
As to notice, the court agreed with Delta that whether a pilot gave advance notice for each leave is an individual question. It found, however, that this question does not predominate. Delta’s iCrew system and its military leave notification log record notice dates for much of the class period. For other periods, class members could submit sworn form declarations at the claims stage. As to damages, the court held that the plaintiffs’ expert model satisfied Comcast Corp. v. Behrend because it mirrors the PWA formulas Delta itself uses to pay jury duty, bereavement, and sick leave. The court noted that the model “remains to be executed.” It warned that it would consider decertification after a liability trial if the model cannot produce reliable estimates.
On superiority, the court found that resolving liability on a classwide basis would be “more manageable than considering over 3,000 separate lawsuits.”
Finally, the court appointed Best as class representative for both classes and directed the parties to file a joint status report addressing mediation and a schedule for further discovery and summary judgment.
Implications For Employers
Haley is a significant win for the plaintiffs’ bar in the growing area of USERRA paid-leave litigation. The court relied on, and added to, a line of airline pilot decisions that includes Clarkson v. Alaska Airlines (9th Cir.), Scanlan v. American Airlines (3d Cir.), and Huntsman v. Southwest Airlines (N.D. Cal.). Several lessons stand out for employers.
First, a uniform, collectively bargained leave policy is effectively a ready-made commonality finding. Courts treat the policy as the “glue” that Wal-Mart found missing.
Second, the ruling sets a demanding standard for defendants on the control factor. Fact-specific evidence about how individual employees schedule their military duty may not defeat certification where the court compares types of leave at a general level.
Third, attacks on the employer’s own data can backfire. Delta’s argument that its leave records were unreliable was answered with official military service records (PCARS) and treated as a weight-of-the-evidence issue for trial.
Finally, defense counsel should not overlook the openings the court left. These include the unexecuted damages model, the express possibility of decertification after a liability trial, the option to narrow the class period to the dates covered by notice data, and the court’s conclusion that a continuous military leave must be measured as a single period.
Employers should audit their paid-leave programs now. Any form of paid short-term leave, such as jury duty, bereavement, or sick leave, is a potential comparator for military leave. As the Haley court reminded, USERRA “mandates only equality of treatment.” Employers have flexibility in how they achieve that equality, but the risk of classwide exposure for unequal treatment is now well established.
On a personal note, as we publish this post on Veterans Day, all of us at the Duane Morris Class Action Defense Team wish our readers a happy Veterans Day. We extend our deepest gratitude to all those who have served, and who continue to serve, in the U.S. Armed Forces. Thank you for your service and your sacrifice.
















