Illinois plans to investigate Akorn Operating Co. after the drugmaker laid off hundreds of workers in late February, according to The Center Square.
Akorn recently closed all of its U.S. operations after years of financial and regulatory struggles.
The drugmaker filed Worker Adjustment and Retraining Notifications in New York and Illinois the same month it laid off hundreds of workers, but a federal labor law says employers with at least 100 employees must provide workers a 60-day notice "of a worksite closing affecting 50 or more employees or a mass layoff affecting at least 50 employees."
Illinois labor officials will probe whether Akorn gave employees enough notice, according to the news outlet.
Akorn also closed operations and suddenly laid off hundreds of workers in New Jersey, but a WARN notice from the drugmaker has not been filed there, according to the state's archive.