Starbucks workers in three states took legal action against the coffee giant Wednesday, saying it violated the law when it but refused to reimburse employees who had to buy new clothes.

The employees, who are backed by the , filed class-action lawsuits in state court in Illinois and Colorado. Workers also filed complaints with California’s Labor and Workforce Development Agency. If the agency decides not to seek penalties against Starbucks, the workers intend to file a class-action lawsuit in California, according to the complaints.

The Associated Press left a message with Starbucks Wednesday seeking comment.

Starbucks’ new dress code went into effect on May 12. It requires all workers in North America to wear a solid black shirt with short or long sleeves under their green aprons. Sh

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