By DEE-ANN DURBIN
AP Business Writer
Starbucks says it wants to start contract negotiations next month at 234 U.S. stores that have voted to unionize. The Seattle coffee giant said Monday it sent letters to stores in 36 states and the District of Columbia offering a three-week window to start negotiations. But Workers United, the union organizing Starbucks workers, is skeptical. It notes that Starbucks opposes unionization. Just three stores have begun bargaining contracts with Starbucks in the U.S. since the start of this year. Workers United says its national committee is focused on developing core proposals that workers will be able to use when they bargain at individual stores.