In 1937, the option was extended to Supreme Court justices, although justices so electing are generally referred to as "retired" justices rather than having senior status. A senior justice is essentially an at-large senior judge, able to be assigned to any inferior federal court by the Chief Justice but receiving the salary of a retired justice. However, a retired justice no longer participates in the work of the Supreme Court itself. That same year, Willis Van Devanter became the first Supreme Court justice to exercise the option. Since this option became available to Supreme Court justices, only ten have died while still in active service, the most recent being Ruth Bader Ginsburg on September 18, 2020.