WARN Act filings affecting workers in Contra Costa, California.
Last updated: Mar 09, 2026 · Showing last 24 months
Contra Costa, CA has recorded 16 WARN filings affecting 323 workers over the past 24 months. The largest filer is Corteva Agriscience, with 25 workers affected. Of these, 4 involved facility closures and 12 were layoff events. Filing dates range from Jul 15, 2025 through Feb 20, 2026.
If your employer filed a WARN notice affecting workers in Contra Costa, you are entitled to 60 days advance written notice before your last day. During the notice period, you remain employed with regular pay and benefits. If your employer gave less than 60 days notice, you may be entitled to back pay and benefits for each day of the shortfall. After your last day, file for unemployment insurance with your state workforce agency as soon as possible. Review your COBRA options to continue health coverage for up to 18 months. Visit your local America's Job Center for free career counseling, resume help, and retraining vouchers.
Apply online at your state workforce agency. You may be eligible before your last day.
Losing employer-sponsored coverage qualifies you for a Special Enrollment Period on the Health Insurance Marketplace.
You may be able to temporarily continue your employer health plan for up to 18 months, though you'll pay the full premium.
Employers with 100 or more employees must give 60 days written notice before mass layoffs or plant closings.
Free career counseling, resume help, job search assistance, and retraining programs through CareerOneStop.
All data on this site is sourced from official WARN Act filings published by state workforce agencies. Filings are updated regularly but may not reflect same-day submissions. Coverage varies by state.
| Company | Type | Workers | Effective | Filed |
|---|---|---|---|---|
| Raley's 3632 Lone Tree Way Antioch CA 94509 |
Closure | 43 | 2026-04-28 | 2026-02-20 |
| Corteva Agriscience 6x in 12 mo 901 Loveridge Road Pittsburg CA 94565 |
Closure | 3 | 2026-04-24 | 2026-02-18 |
| Corteva Agriscience 6x in 12 mo 901 Loveridge Road Pittsburg CA 94565 |
Layoff | 1 | 2026-02-27 | 2026-01-22 |
| Henkel 5110 Port Chicago Hwy Suite A Concord CA 94520 |
Closure | 13 | 2026-01-30 | 2025-11-20 |
| Verizon 2770 Shadelands Dr., Bldg 11 Walnut Creek CA 94598 |
Layoff | 54 | 2026-01-23 | 2025-11-20 |
| Corteva Agriscience 6x in 12 mo 901 Loveridge Road Pittsburg CA 94565 |
Layoff | 4 | 2026-02-27 | 2025-11-18 |
| Corteva Agriscience 6x in 12 mo 901 Loveridge Road Pittsburg CA 94565 |
Layoff | 3 | 2026-01-02 | 2025-10-21 |
| Kaiser Permanente 3x in 12 mo 501 Lennon Ln. Walnut Creek CA 94598 |
Layoff | 1 | 2025-09-17 | 2025-10-06 |
| Kaiser Permanente 3x in 12 mo 4501 Sand Creek Antioch CA 94531 |
Layoff | 1 | 2025-09-08 | 2025-09-08 |
| Kaiser Permanente 3x in 12 mo 25 N. Via Monte Walnut Creek CA 94598 |
Layoff | 1 | 2025-09-08 | 2025-09-08 |
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