Knox v. Service Employees International Union, 567 U.S. 298 (2012), is a United States constitutional law case. The United States Supreme Court held in a 7–2 decision that Dianne Knox and other non-members of the Service Employees International Union did not receive the required notice of a $12 million assessment the union charged them to raise money for the union's political fund. In a tighter 5–4 ruling, the court further held that the long-standing precedent, the First Amendment requirement that non-union members covered by union contracts be given the chance to "opt out" of special fees was insufficient. Setting new precedent, the majority ruled that non-members shall be sent notice giving them the option to opt into special fees.