US supreme court to decide if Walmart lawsuit can proceed | Business | The Guardian The US supreme court said today it would decide if the largest sex-discrimination lawsuit in US history, against Walmart, can proceed. Female employees seek billions of dollars in damages because they say they were paid less than men and given fewer promotions. It involves as many as 1.5 million current and former female workers at the company's 3,400 US stores over the past decade. The Supreme Court is expected to hear arguments in the case, which immediately became the most important business dispute before the justices this term, in March, with a ruling likely by the end of June. The ruling could affect other class-action lawsuits. Anthony Sabino, a professor of law and business at St John's University in New York, said the case "will test the very limits of class litigation". Since this corporation has become such a huge part of retail and the service sector, I suspect it will serve as a bellwether for economic as well as legal precedent.