A WARN(Worker Adjustment and Retraining Notification) notice is a notice required by the federal WARN Act in the United States, which mandates that employers with 100 or more employees provide at least 60 days advance written notice of a plant closing or mass layoff affecting 50 or more employees. WARNtracker.com tracks these and conveniently displays them in a database. They have also recently launched a new job board with 16,000+ jobs from over 300 companies!