United States District Court Judge Susan Illston (Northern District of California) certified in part a class action alleging the failure to reimburse work-related mileage expenses.  Wilson v. Kiewit Pacific Co. (N.D. Cal. December 6, 2010).  As an initial matter, the Court refused to certify a class of "all" employees, noting that it was overbroad:

As an initial matter, plaintiff cannot seek to certify a class of “all current and former” California employees of defendant from July 6, 2006 to present. Motion at 3; Reply at 3-4. On its face, that definition is impermissibly overbroad as it includes employees who never incurred unreimbursed business mileage expenses under California law.

Slip op., at 3.  Next, the Court observed that the plaintiff did not submit evidence demonstrating that the Northern California district was operated under the same policies as the Southern California District.  The Court found the plaintiff inadequate to represent the Northern California District employees on the basis of thin evidence of any uniform policy that was actionable.

With respect to the Southern California District, the Court agreed with the defendant that the plaintiff's proposed class definition was problematic, but not for the reason argued:

The Court agrees that there is a problem with the way plaintiff has proposed to define this particular subclass, but not the ascertainability problem defendant asserts. Instead, plaintiff's proposed definition-all Southern California district employees who drove their non-company owned vehicles “over” 25/35 miles-would seem to include only those who received some reimbursement under defendant's policy and not those employees who drove under 25/35 miles but were nonetheless owed reimbursement for non-commute time under plaintiff's theories. The Court doubts plaintiff intended to exclude those employees from the proposed class.

Slip op., at 7.  The Court then revised the class definition, declaring it ascertainable and better defined:

All of defendant's past and present non-union employees working in the Southern California district at any time from July 6, 2005 to present who were not reimbursed for non-commute mileage expenses incurred in using personal vehicles to travel to off-site meetings or trainings.

Slip op., at 7.  This, in particular is very helpful to litigants.  It demonstrates an engaged Court that has provided a concrete example of how to refine and improve a class definition.

The Court found unpersuasive the defendant's argument that some class members had individual deals in place to get company cars.  The Court finished by offering some comments about the obligation to supplement witness lists provided with initial disclosures, finding that those concerns were not at issue due to the rapidly shifting nature of the plaintiff's claims.