Final answer:
Employers with over 100 employees must provide at least 60 days' written notice before substantial operational changes like remodeling or relocating a hospital pharmacy, as stipulated by the WARN Act.
Step-by-step explanation:
The question pertains to the notice period required by law for employers planning significant changes such as a remodel or relocation of a community hospital pharmacy. In accordance with federal regulations, specifically the Worker Adjustment and Retraining Notification (WARN) Act, employers with more than 100 employees are obligated to provide a minimum of 60 days' written notice to both employees and certain government entities prior to a plant closing or a mass layoff. This same guideline can be applicable when significant operational changes, such as remodeling or relocating a hospital pharmacy, might result in substantial workforce reductions or terminations.