The Richard L. Trumka Protecting the Right to Organize Act, or PRO Act, is a proposed United States law that would amend previous labor laws such as the National Labor Relations Act for the purpose of expanding "various labor protections related to employees’ rights to organize and collectively bargain in the workplace.” The measure would prevent employers from holding mandatory meetings for the purpose of counteracting labor organization, and would strengthen the legal right of employees to join a labor union. The bill would also permit labor unions to encourage secondary strikes. The PRO Act would weaken “right-to-work” laws, which exist in 27 U.S. states. It would allow the National Labor Relations Board to fine employers for violations of labor law, and would provide compensation to employees involved in such cases.