In the Wal-Mart case, the Supreme Court decided that the 1.5 million females are not capable to be approved as a right class of plaintiffs in a class-action lawsuit for work bias against Wal-Mart. It justified its decision because of commonality. The commonality is defined to be the common people, for example, the type of class the common people come from, socio-economic class. Therefore, in 2011, the Supreme Court judged Walmart’s turn when they said that the plaintiffs did not have enough in common to comprise and to form a whole class.