An overwhelming majority of UPS union workers voted Friday to authorize the right to strike, raising the possibility that the world’s largest package company could cease deliveries in the US as early as August 1. TEAMSTERS AUTHORIZE STRIKE AT UPS pic.twitter.com/AmO2pjKt3v — Alex Press (@alexnpress) June 16, 2023 The Teamsters union, which represents more than 340,000 UPS employees, is currently in contract negotiations with UPS.