623 Retirees have a lot of experience with UPS and the tactics management use to cut-corners and take money out of your pocket. When supervisors take bargaining unit work it means lower paychecks and fewer hours for you and your fellow Teamsters. The best defense against supervisors working is YOU! Make sure you file a grievance if you catch a supervisor doing bargaining unit work and follow the steps below to protect yourself and your Teamster sisters and brothers.