Starbucks Workers United rallied in New York City for improved staffing hours, take-home pay, and on-the-job protections. The union has authorized a strike starting on Red Cup Day if a new contract isn’t reached by Nov. 13. The strike won 92% of votes and aims to resolve unfair labor practices charges against Starbucks.

The strike could disrupt Starbucks’ holiday season, including Red Cup Day, a major sales event. Workers United represents over 12,000 workers in 650 stores. Starbucks, with nearly 18,000 company-operated and licensed stores, claims to offer competitive pay and benefits. The company is disappointed in the strike authorization and is ready to negotiate.

Starbucks reported growth in same-store sales for the first time in nearly two years. The coffee chain’s global same-store sales rose 1%, driven by international markets. The U.S. same-store sales were flat but turned positive in September. Starbucks is undergoing a $1 billion restructuring plan, including store closures and layoffs.

Read more at CNBC: Starbucks union authorizes open-ended strike as holiday season begins