The Worker Adjustment and Retraining Notification Act (WARN) requires employers to give employees a 60-day written notice before a plant closing or mass layoff.
In general, employers are covered by WARN if they have 100 or more employees, not counting employees who have worked less than 6 months in the last 12 months and not counting employees who work an average of less than 20 hours a week.
Private, for-profit employers and private, nonprofit employers are covered, as are public and quasi-public entities which operate in a commercial context and are separately organized from the regular government. Regular Federal, State, and local government entities which provide public services are not covered.
The employer must notify the union in an organized workplace. The Act is enforced by lawsuits filed in federal court.
Visit here for the U.S. Department of Labor Employment and Training Administration Fact Sheet or contact us if you have any questions or concerns.