David Bonior, professor of labor studies at Wayne State University, commented about Walmart's bid to establish an industrial-bank charter to handle payment processing. Labor and consumer groups said Tuesday that Wal-Mart Stores Inc.'s frequent regulatory violations and failure to provide fair pay make it unfit to operate a bank. Opponents said past regulatory violations and such lawsuits as the largest-ever sex-discrimination case demonstrate Wal-Mart can't be trusted to restrict its bank to merely processing payments. The company has a history of shirking protections for workers, said David Bonior, professor of labor studies at Wayne State University. "Wal-Mart's illegal behavior had profound consequences for its employees," he said.