Charles River Laboratories Layoffs - WARN Act Notices
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Charles River Laboratories has a WARN Act filing history stretching from September 2014 to April 2026, with 24 notices affecting 818 employees in total. Filings are concentrated in Illinois (10) and Maryland (7), with additional notices across 3 other states. Notices include 14 layoffs and 8 facility closures and 2 layoffs. The largest single filing affected 94 employees in Skokie, IL (January 2025).
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 (2)
This page aggregates WARN Act notices filed under 2 related names:
- Charles River Laboratories
- Charles River Laboratories, Inc.
Layoff History
Employees affected over time
All WARN Act Notices
| Location | Effective Date | Employees | Type |
|---|---|---|---|
| Wilmington, MA | Apr 24, 2026 | 71 | layoff |
| Wilmington, MA | Apr 24, 2026 | 71 | layoff |
| Cabover Drive Hanover, MD | Mar 23, 2026 | 20 | closure |
| Wilmington, MA | Jan 6, 2026 | 71 | layoff |
| Wilmington, MA | Jan 6, 2026 | 68 | layoff |
| Durham, NC | Oct 24, 2025 | 37 | closure |
| Skokie, IL | May 30, 2025 | — | layoff |
| Skokie, IL | May 29, 2025 | — | layoff |
| Skokie, IL | May 2, 2025 | — | layoff |
| Skokie, IL | May 1, 2025 | — | layoff |
| Skokie, IL | Mar 31, 2025 | — | layoff |
| Skokie, IL | Mar 30, 2025 | — | layoff |
| Frederick, MD | Mar 28, 2025 | 7 | closure |
| Frederick, MD | Mar 28, 2025 | 13 | closure |
| Skokie, IL | Feb 3, 2025 | 1 | layoff |
| Skokie, IL | Feb 2, 2025 | 1 | layoff |
| Skokie, IL | Jan 31, 2025 | 94 | closing |
| Skokie, IL | Jan 30, 2025 | 94 | closing |
| Frederick, MD | Sep 30, 2024 | 13 | layoff |
| Frederick, MD | May 13, 2024 | 14 | closure |
| South San Francisco, CA | Sep 19, 2023 | 55 | closure |
| South San Francisco, CA | Sep 18, 2023 | 55 | closure |
| Unknown, MD | Nov 13, 2017 | 57 | closure |
| Unknown, MD | Sep 25, 2014 | 76 | layoff |