WARN Act filings affecting workers in Contra Costa, California.
Last updated: Sep 08, 2026 · Showing last 24 months
Contra Costa, CA has recorded 15 WARN filings affecting 294 workers over the past 24 months. The largest filer is John Muir Health, with 25 workers affected. Of these, 1 involved facility closures and 14 were layoff events. Filing dates range from Jul 1, 2026 through Aug 27, 2026. Contra Costa represents 3% of California workers affected by WARN filings in this period. Unlike the statewide pattern, filings in Contra Costa are predominantly layoff events rather than closures.
Federal WARN generally requires 60 days notice for covered events, subject to exceptions. State laws may impose different requirements. Check your own written notice and Department of Labor guidance; public filing dates alone do not establish compliance. Your state workforce agency can help with unemployment benefits and local reemployment services.
Apply online at your state workforce agency. You may be eligible before your last day.
Continue your employer health plan for up to 18 months, or compare lower-cost options on the Health Insurance Marketplace.
Federal WARN generally requires 60 days notice for covered employers and qualifying events, subject to exceptions. State rules may differ.
Free career counseling, resume help, job search assistance, and retraining programs through CareerOneStop.
Interview prep, job search management, and career planning tools to help you land your next role.
We don't have a job center listed for Contra Costa specifically, but you can find nearby centers on the California page.
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 | Recorded |
|---|---|---|---|---|
| John Muir Health - Treat Blvd 1400 Treat Boulevard Walnut Creek CA 94597 |
Layoff | 23 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health 5x in 12 mo 1450 Treat Boulevard Walnut Creek CA 94597 |
Layoff | 4 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health 5x in 12 mo 1601 Ygnacio Valley Road Walnut Creek CA 94597 |
Layoff | 15 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health - 177 La Casa Via 177 La Casa Via Walnut Creek CA 94598 |
Layoff | 2 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health 5x in 12 mo 2540 East Street Concord CA 94520 |
Layoff | 3 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health 5x in 12 mo 2740 Grant Street Concord CA 94520 |
Layoff | 2 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Health 5x in 12 mo 3480 Buskirk Avenue Pleasant Hill CA 94523 |
Layoff | 1 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Physician Network 1450 Treat Boulevard Walnut Creek CA 94597 |
Layoff | 6 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Physician Network 1601 Ygnacio Valley Road Walnut Creek CA 94597 |
Layoff | 1 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
| John Muir Behavioral Health 2740 Grant Street Concord CA 94520 |
Layoff | 1 | 2026-10-28 Recorded: 2026-08-27 |
2026-08-27 |
TopResume's career experts will evaluate your resume and provide actionable feedback within 48 hours.
Receive a daily digest when new WARN filings are posted in Contra Costa, California.