U.S. labor board files complaint against Tesla over worker rights

The U.S. agency in charge of enforcing labor law on Thursday filed a complaint against electric carmaker Tesla, saying it found merit to workers’ complaints about unfair labor practices. According to the National Labor Relations Board complaint, Tesla violated workers’ rights by requiring them to sign a confidentiality agreement that could bar them from talking about their working conditions and safety issues at the company’s facility in Fremont, Calif.