An Alabama federal judge Thursday issued a temporary restraining order against a major supplier to Hyundai that had threatened workers who spoke out about health and safety concerns and fired a whistleblower. The judge’s decision came a day after the U.S. Department of Labor, in a decisive move to protect workers’ rights, charged Lear Corp., which manufacturers seats for Hyundai, with interfering in a federal investigation over dangerous conditions at its Selma, Ala., plant. The DOL’s complaint...charged the Hyundai supplier with “flouting the Occupational Safety and Health Act’s protections by threatening, frivolously suing, and suspending or terminating employees” who have spoken to federal investigators about health and safety concerns at the plant....The Selma facility manufactures foam cushions and headrests for Hyundai, which requires the use of the hazardous chemical TDI.