Amgen has a WARN Act filing history stretching from July 2009 to August 2023, with 3 notices affecting 379 employees in total. Filings span Washington (2) and California (1). Notices include 2 facility closures and 1 layoff.

Under the WARN Act (Worker Adjustment and Retraining Notification Act), employers with 100 or more employees are required to provide 60 days advance notice before conducting plant closures or mass layoffs. These notices are filed with state labor departments and are public record.

Layoff History

Employees affected over time

All WARN Act Notices

Location	Effective Date	Employees	Type
San Carlos, CA	Aug 31, 2023	4	closure
Seattle, WA	Dec 31, 2014	274	closure
Bothell, WA	Jul 13, 2009	101	layoff