During the 19th century, U.S. employers insisted that the hazards of a particular job were a risk that the employee assumed when he/she went to work. The "fellow servant" rule held that an employee could not sue an employer for negligence if the employee's injury was caused by the negligence of a fellow worker. In 1908 Congress abolished the rule for railroad workers through the National Employers' Liability Act. In 1911 Wisconsin passed a workers' compensation act, which was upheld in the Supreme Court. Other states followed Wisconsin's lead. Today all states have such statutes.