The National Labor Relations Board has issued a complaint against Amazon, alleging that the company illegally threatened, surveilled, and interrogated workers who were trying to start a union at its Staten Island, New York facilities. The company also reportedly hired a union avoidance consultant who told workers that the union organizers were’thugs’.

The complaint details other alleged incidents between Amazon and union organizers. The company allegedly’solicited grievances from employees with an express promise to remedy them if they rejected the union as their bargaining representative’.

Amazon will either have to settle this case or have it go to trial. The NLRB is calling for training for managers, supervisors, security guards, and union avoidance consultants.

The nationalrb has had several other disputes with Amazon around labor law. In December, the company agreed to post notices to current and former employees about their rights to join a union. Amazon also agreed to change rules that made it difficult for workers to organize together.

The NLRB sent the verge a statement from Kathy drew King, regional director for region 29 about its complaint. The NLRB said the verge was filing a complaint.

The complaint seeks to stop and remedy this unlawful conduct to ensure that Amazon’s employees can freely and fairly exercise their rights under the National Labor Relations Act.

Amazon did n’t immediately respond to the verge’s request for comment. Motherboard reports that an Amazon spokesperson denied the allegations.

The Amazon labor union (or ALU) has been organizing at Amazon’s Staten Island facilities. On Thursday it announced that it had successfully petitioned to hold a union election for the jfk8 warehouse. One of ALU’s organizers is daequan Smith.