Employees at a Buffalo-area Starbucks store have voted to form a union, making it the only one of the nearly 9,000 company-owned stores in the United States to be organized and notching an important symbolic victory for labor at a time when workers across the country are expressing frustration with wages and working conditions.

The result, announced on Thursday by the National Labor Relations Board, represents a major challenge to the labor model at the giant coffee retailer, which has argued that its workers enjoy some of the best wages and benefits in the retail and restaurant industry and don’t need a union.

Read more at the New York Times.