Starbucks’ workers union is accusing the coffee retailer of multiple misconducts against members, including illegal firing, withholding benefits, and failing and refusing to negotiate a contract.

The union said it had filed 47 new federal unfair labor practice charges against the company since December 8.

These practices include illegally prohibiting union workers from taking part in the North American Barista Championship; giving smaller raises to some workers at union stores as compared to higher raises to workers at non-union stores; offering new benefits to workers at non-union stores; and firing 17 workers for supporting the union.

The union also noted that Starbucks Providence shut down for a day after workers who voted to join Starbucks Workers United showed up wearing their union shirts. The company told the workers to go home or turn their shirts inside out.

“If Starbucks is indeed sincere in its desire for a kinder, gentler, relationship with its workers, it needs to bargain a fair contract with the nearly 10000 of us who have already voted to join Starbucks Workers United,” said Lydia Fernandez, a barista in Philadelphia.

“It needs to let the untold thousands more who wish to join together with us the right to organize free of intimidation and retaliation.”

Meanwhile, Starbucks called out the union for the allegations but maintained that the company is committed to reaching an agreement with the workers.

“The claims by Workers United distort the process for reviewing the merit of allegations made and efforts made by Starbucks towards reaching first contracts for union-represented stores,” said Starbucks spokesperson Rachel Wall.

“We remain committed to better communicating with unions elected to represent our partners and are pursuing a path forward that would allow us to resume productive contract negotiations for our represented US partners.”