No contract? No Starbucks coffee at the union hall. Seeking to pressure Starbucks to finally sign a contract with its 12,000 unionized baristas, Starbucks Workers United announced a boycott of the chain August 25. In addition to individual customers, they are asking organizations and unions to stop patronizing the coffee giant, including avoiding catering and sponsorships, until they get a contract. The AFL-CIO has already signed on, and the 25,000-strong Chicago Teachers Union voted to boycott on August 26.