TUSCALOOSA, AL—Mercedes-Benz US-International is in violation of federal labor law for prohibiting employees from organizing inside its assembly plant here when they are off the clock, an appeals court ruled on Monday. The U.S. Court of Appeals for the 11th Circuit upheld a 2014 ruling by the National Labor Relations Board that Mercedes employees are free to solicit other employees to join the UAW Local 112 on the plant site. MORE