A union card, or union authorization card, is a card you sign to show you support forming a union in your workplace. There are different legal paths to forming a union, but one involved going through the National Labor Relations Board. If enough of you and your coworkers sign a union card, you can hold a vote. If a majority vote “yes,” you’ve won your union! But often times, corporations and management will fight the unionization process – they don’t want to have to increase wages or benefits, or give you the rights on the job that come with a union contract. So it takes commitment and teamwork to get to a majority of your coworkers signed up on union cards.