Final answer:
The WARN Act mandates that employers with over 100 employees must provide 60-days advance notice of significant layoffs, but exceptions include natural disasters, a faltering company, and unforeseeable business circumstances.
Step-by-step explanation:
The Worker Adjustment and Retraining Notification (WARN) Act requires employers with more than 100 employees to provide written notice 60 days before plant closings or large layoffs. There are, however, three exceptions to this rule where fewer than 60 days' advance notice is permissible. These exceptions are: a) Natural disaster, meaning events like earthquakes, floods, or hurricanes that could not be anticipated; b) Faltering company, where a company is seeking new capital or business in order to stay open and giving the notice would ruin the opportunity to get the new capital or business; and c) Unforeseeable business circumstances, which refers to unexpected and dramatic economic events or decisions outside the employer's control that could not be predicted.