Merck Layoffs - WARN Act Notices
6,149 Employees Affected
5 Locations
19 Notices Filed
Sep 4, 2026 Most Recent
Merck has a WARN Act filing history stretching from November 2003 to September 2026, with 19 notices affecting 6,149 employees in total. Filings span New Jersey (17) and Pennsylvania (2). All classified notices are layoffs. The largest single filing affected 4,400 employees (November 2003).
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.
Filing Identities (3)
This page aggregates WARN Act notices filed under 3 related names:
- Merck
- Merck & Co
- Merck & Co.
Layoff History
Employees affected over time
All WARN Act Notices
| Location | Effective Date | Employees | Type |
|---|---|---|---|
| Rahway, NJ | Sep 4, 2026 | 88 | layoff |
| Rahway, NJ | Nov 14, 2025 | 58 | layoff |
| Rahway, NJ | Nov 13, 2025 | 58 | layoff |
| Rahway, NJ | Nov 13, 2025 | 58 | layoff |
| Kenilworth, NJ | Nov 14, 2016 | 64 | layoff |
| Kenilworth, NJ | Nov 13, 2016 | 64 | layoff |
| Kenilworth, NJ | Nov 13, 2016 | 64 | layoff |
| North Wales, PA | Feb 3, 2014 | 152 | layoff |
| Kenilworth, NJ | Oct 1, 2013 | 113 | layoff |
| Kenilworth, NJ | Sep 30, 2013 | 113 | layoff |
| Kenilworth, NJ | Sep 30, 2013 | 113 | layoff |
| Kenilworth, NJ | Dec 5, 2012 | 150 | layoff |
| Kenilworth, NJ | Dec 4, 2012 | 150 | layoff |
| Kenilworth, NJ | Dec 4, 2012 | 150 | layoff |
| Springfield, NJ | Dec 20, 2011 | 50 | layoff |
| Springfield, NJ | Dec 19, 2011 | 50 | layoff |
| Springfield, NJ | Dec 19, 2011 | 50 | layoff |
| Unknown, PA | Nov 1, 2003 | 4,400 | layoff |
| Rahway, NJ | N/A | 204 | layoff |