Union for UPS mechanics rejects proposed contract - WDRB The rejection of the contract means both sides will return to negotiations, which had been going on for years. UPS mechanics have rejected an offer for a contract with the company. Louisville-based Teamsters Local 2727 turned a thumbs down to the deal, which could have made the 1,300 aircraft mechanics the highest paid in the country. The five-year contract would have provided an immediate 16-percent raise, retroactive pay for hours worked since November 2013 and continuation of no-premium health insurance. UPS mechanics, many of whom are based in Louisville at the company’s Worldport air hub, earn more than $100,000 annually, with a “robust” defined-benefit pension plan and no-cost health insurance, UPS told WDRB in 2016.