In a class action alleging violations of California's minimum wage and hour laws, the District Court's order granting class certification under Fed. R. Civ. P. 23 to a plaintiff representing a class of former and current sales associates of Stoneledge Furniture, LLC is affirmed where: 1) plaintiff established commonality, as required by Fed. R. Civ. P. 23(a), and the District Court permissibly concluded that plaintiff pleaded a common injury capable of class-wide resolution; 2) plaintiff established the predominance of class claims, as required by Fed. R. Civ. P. 23(b)(3), and the District Court permissibly ruled that individual claims did not predominate in this case; and 3) class certification did not alter the parties' substantive rights, and the District Court did not violate the Rules Enabling Act in certifying the class.