The strike by Starbucks (NASDAQ:SBUX) baristas that are members of the Workers United union ended on December 24. However, the labor issues for the coffee chain are far from over. The union organized the strike to protest a lack of progress in contract negotiations with Starbucks (SBUX).

Starbucks' union says workers are walking off the job at some 300 — out of over 10,000 — stores across the U.S. as contract negotiations falter. The company urges it to return to the bargaining table.

Starbucks workers have expanded their strike to more cities and closed 59 stores across the U.S. as of Monday, the union said amid stalled negotiations.