In a putative collective action and class action brought under the Fair Labor Standards Act (FLSA) against DuPont, seeking overtime compensation for time plaintiffs spent donning and doffing their uniforms and protective gear and performing 'shift relief' before and after their regularly-scheduled shifts, the District Court's grant of summary judgment to defendant is reversed where the FLSA and applicable regulations, as well as circuit precedent in Wheeler v. Hampton Twp., 399 F.3d 238 (3d Cir. 2005), compel the opposite result.