Smithfield Foods, the nation’s largest pork producer, is facing a federal lawsuit over working conditions in its Milan, Missouri, plant. The facility has remained open despite the closure of two other processing plants due to the spread of COVID-19 among employees.

The Rural Community Workers Alliance and a Milan plant worker filed a complaint in Missouri Western District Court Thursday, alleging that the company is putting employee lives at risk by failing to comply with Center for Disease Control and Prevention safety guidelines concerning the COVID-19 pandemic.