Catherine Fisk, a professor at the University of California, Berkeley School of Law, said public support for unions is at its highest levels since the 1960s. Coupled with recent actions by the NLRB that boost union organizing, those positive attitudes about unions embolden workers to form them, whether on their own as thousands of Starbucks workers have since 2021 or by teaming up with established unions like Volkswagen employees in Tennessee who recently voted to join the United Auto Workers, she said.