Final answer:
The Worker Adjustment and Retraining Notification (WARN) Act requires employers with over 100 employees to notify workers 60 days in advance of plant closings or large layoffs to help workers transition and sustain unemployment insurance.
Step-by-step explanation:
The Worker Adjustment and Retraining Notification (WARN) Act specifies the conditions under which employers are required to give advance notice of a plant closing or mass layoff. Employers with more than 100 employees are mandated to provide a written notice 60 days before such events. This notice is important to allow workers to prepare for the transition, seek other employment, or obtain training for new employment. Moreover, the WARN Act helps to cover workers with unemployment insurance and manage the effects of job losses on communities.
In addition to the WARN Act, other labor laws also impact the workplace. For example, certain legislations allow states to determine if workers in a firm need to join a union, or they may permit the president to enforce a "cooling-off period" during a disruptive union strike, requiring workers to return to their jobs temporarily.