Two former NECCO employees filed a lawsuit against the company’s owners for the sudden closure of the Revere, Massachusetts plant.

According to the Boston Business Journal, the company’s Revere plant abruptly shut down its factory on July 24, leaving its 230 workers stunned and unemployed. They were told to pick up their final paychecks that same Friday.

The class action lawsuit states that Round Hill Investments failed to warn employees ahead of time of the company’s closure. It was filed under the WARN Act, which requires at least a 60-day notice for layoffs.