Protecting the Right to Organize Act of 2019 This bill amends the National Labor Relations Act and related labor laws to extend protections to union workers. Specifically, it revises the definition of "employee" and "supervisor" to prevent employers from classifying employees as exempt from labor law protections, expands unfair labor practices to include prohibitions against replacement of or discrimination against workers who participate in strikes, makes it an unfair labor practice to require or coerce employees to attend employer meetings designed to discourage union membership, permits workers to participate in collective or class action litigation, allows injunctions against employers engaging in unfair labor practices involving discharge or serious economic harm to an employee, expands penalties for labor law violations, including interference with the National Labor Relations Board or causing serious economic harm to an employee, and allows any person to bring a civil action for harm caused by labor law violations or unfair labor practices.