APWU TCAL 531 is the official mobile application of the APWU TCAL 531. It provides APWU TCAL 531 members with a tool to connect with their union and stay informed about union activities and updates. Members can access essential resources, such as contracts and important documents (if available), related to their rights in the workplace. The app also keeps members updated on major events and provides useful information about their rights and responsibilities as union members.