CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

1. Feb 2, 2026layoffs from Mar 23, 2026

   Plant closure

   Plant closure: Hanover, MD

   Charles River Laboratories, Inc. filed a WARN notice with the Maryland WARN list on Feb 2, 2026 covering 20 workers at 3600 Cabover Drive Hanover MD 21076. The site closes on Mar 23, 2026.

   Site: Hanover, MD

   Workers affected: 20

   Source: Maryland WARN list, filed Feb 2, 2026

2. Apr 2, 2025layoffs from Mar 28, 2025

   Plant closure

   Plant closure: Frederick, MD

   Charles River Laboratories, Inc. filed a WARN notice with the Maryland WARN list on Apr 2, 2025 covering 13 workers at 15 Wormans Mill Court, Suite 1 Frederick, MD 21701. The site closes on Mar 28, 2025.

   Site: Frederick, MD

   Workers affected: 13

   Source: Maryland WARN list, filed Apr 2, 2025

3. Jan 29, 2025layoffs from Mar 28, 2025

   Plant closure

   Plant closure: Frederick, MD

   Charles River Laboratories, Inc. filed a WARN notice with the Maryland WARN list on Jan 29, 2025 covering 7 workers at 15 Wormans Mill Court, Suite I Frederick, MD 21701 (Maryland PAI site). The site closes on Mar 28, 2025.

   Site: Frederick, MD

   Workers affected: 7

   Source: Maryland WARN list, filed Jan 29, 2025

4. Nov 7, 2024

   Plant closure

   Plant closure: Skokie, IL

   Charles River Laboratories, Inc. filed a WARN notice with the Illinois WARN list on Nov 7, 2024 covering 94 workers at 8025 Lamon Ave., Skokie.

   Site: Skokie, IL

   Workers affected: 94

   Source: Illinois WARN list, filed Nov 7, 2024

5. Aug 2, 2024layoffs from Sep 30, 2024

   WARN notice

   WARN notice: Frederick, MD

   Charles River Laboratories filed a WARN notice with the Maryland WARN list on Aug 2, 2024 covering 13 workers at 15 Wormans Mill Court Suite 1 Frederick, MD 21701. The layoffs take effect on Sep 30, 2024.

   Site: Frederick, MD

   Workers affected: 13

   Source: Maryland WARN list, filed Aug 2, 2024

6. Mar 14, 2024layoffs from May 13, 2024

   Plant closure

   Plant closure: Frederick, MD

   Charles River Laboratories filed a WARN notice with the Maryland WARN list on Mar 14, 2024 covering 14 workers at 15 Wormans Mill Court Suite 1 Frederick, MD 21701. The site closes on May 13, 2024.

   Site: Frederick, MD

   Workers affected: 14

   Source: Maryland WARN list, filed Mar 14, 2024

7. Jul 19, 2023layoffs from Sep 19, 2023

   Plant closure

   Plant closure: CA

   Charles River Laboratories, Inc. filed a WARN notice with the California WARN list on Jul 19, 2023 covering 55 workers. The site closes on Sep 19, 2023.

   Site: CA

   Workers affected: 55

   Source: California WARN list, filed Jul 19, 2023

8. Mar 19, 2019layoffs from May 20, 2019

   Plant closure

   Plant closure: San Diego, CA

   Charles River Laboratories, Inc. filed a WARN notice with the California WARN list on Mar 19, 2019 covering 24 workers in San Diego. The site closes on May 20, 2019.

   Site: San Diego, CA

   Workers affected: 24

   Source: California WARN list, filed Mar 19, 2019

Last verified Nov 8, 2026