Final answer:
US law requires employers with over 100 employees to provide a minimum of 60 days of advance written notice before plant closings or substantial layoffs to comply with worker protection standards.
Step-by-step explanation:
The Department of Commerce, as governed by US laws, particularly in cases involving plant closings or mass layoffs, mandates that employers with more than 100 employees must provide at least 60 days of advance written notice. Such regulations are part of larger worker protection laws aimed to afford employees sufficient time to seek alternative employment or training in a scenario where they might be facing unemployment due to significant operational changes such as layoffs or site closures.
It is crucial for companies to adhere to these regulations to ensure legality and to allow both parties to prepare for the transition. This has been especially relevant given that anti-dumping investigations and other senior political decisions can significantly impact the availability and continuity of jobs in certain industries, leading to potential plant closures or layoffs. The ability to plan in the wake of imminent changes to operational status is a right employees are legally entitled to, reflecting a balance between business needs and worker rights.