The Starbucks Workers United began strikes at certain Starbucks stores in 41 cities on Thursday, Nov. 13.

The coffee giant is returning to its roots to boost sales but labour tensions could derail the strategy.

The strike could disrupt Starbucks' key holiday season as it tries to carry out a turnaround under CEO Brian Niccol.

Starbucks emphasized that the vast majority of its U.S. stores would be open and operating as usual Thursday.

Thousands of Starbucks workers in about 40 cities began striking Thursday on Red Cup Day, the company's biggest sales day of the year.

Unionized Starbucks workers are asking the company for better hours, take-home pay and resolutions to alleged unfair labor practices.

Starbucks workers at 65 unionised US stores walk off the job in protest over pay and staffing.

The strike comes as the company's workers push for better wages and benefits.

The Starbucks Workers United began strikes at certain Starbucks stores in 41 cities on Thursday, Nov. 13.

In Brooklyn, workers walked off the job in search of fair pay and conditions – and said many customers were in support