The U.S. federal Worker Adjustment and Retraining Act (WARN) states that employers with 100 or more employees must provide at least 60 days advance notice before a mass layoff affecting 50 or more employees.
Are there any protections against an employer circumventing the WARN act by staggering layoffs over multiple days? For example, could an employer lay off 200 people without notice by laying off 40 employees each day for a week?