Money Tracker Daily

Layoffs in Contra Costa County, California

8 employers in Contra Costa County have filed 21 WARN notices since July 2026, covering 379 workers. Largest by workers: Chevron (180); John Muir Health (68); Shell Catalyst & Technologies (64). They were processed by the EDD on 7 different dates, most recently Sep 29, 2026. The latest notice (2 workers, from Corteva Agriscience) takes effect on Oct 30, 2026.

Last updated
Latest notice
Source
California Employment Development Department

About this data: figures are collected automatically from California Employment Development Department and checked before publication. They are for general information only and are not advice. Confirm with the source before acting. Last verified Oct 1, 2026, 3:00 PM ET. Report an error →

Employer names and worker counts are as reported in WARN notices filed with the California Employment Development Department and may be amended by the filer. Employers who believe a listing is inaccurate can email editor@moneytrackerdaily.com with the filing reference.

All California WARN notices · Methodology · Download CSV · Cite this

Summary

WARN notices21
Workers affected379
Closures2115 workers; the rest are layoffs
Processed datesJul 2026 – Sep 2026
Largest notice180Chevron, Jul 8, 2026

All 21 notices

Newest first. Employer names and worker counts are as filed with the state; each notice links to the state's official listing (EDD WARN report), which has no page for a single notice.
ProcessedEmployer (as filed)CountySiteWorkersTypeIndustryEffectiveSource
Sep 29, 2026Corteva Agriscience LLCContra Costa901 Loveridge Road Pittsburg CA 945652Layoff, permanentManufacturingOct 30, 2026Listing
Sep 9, 2026Shell Catalyst & TechnologiesContra Costa10 Mococo Road Martinez CA 9455364Closure, permanentManufacturingNov 30, 2026Listing
Aug 28, 2026Raley's Store No. 336Contra Costa2400 Sand Creek Rd. Brentwood CA 9451351Closure, permanentRetail TradeNov 3, 2026Listing
Aug 27, 2026John Muir Health - Treat Blvd.Contra Costa1400 Treat Boulevard Walnut Creek CA 9459723Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 2540 East StreetContra Costa2540 East Street Concord CA 9452015Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 1601 Ygnacio Valley RoadContra Costa1601 Ygnacio Valley Road Walnut Creek CA 9459715Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Physician Network - 1450 Treat Blvd.Contra Costa1450 Treat Boulevard Walnut Creek CA 945976Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 1450 Treat Blvd.Contra Costa1450 Treat Boulevard Walnut Creek CA 945974Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 2540 East StreetContra Costa2540 East Street Concord CA 945203Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 5003 Commercial CircleContra Costa5003 Commercial Circle Concord CA 945202Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 2740 Grant StreetContra Costa2740 Grant Street Concord CA 945202Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 177 La Casa ViaContra Costa177 La Casa Via Walnut Creek CA 945982Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Physician Network - 2700 Grant StreetContra Costa2700 Grant Street Concord CA 945201Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Physician Network - 1601 Ygnacio Valley RoadContra Costa1601 Ygnacio Valley Road Walnut Creek CA 945971Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 3480 Buskirk Ave.Contra Costa3480 Buskirk Avenue Pleasant Hill CA 945231Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Health - 2700 Grant StreetContra Costa2700 Grant Street Concord CA 945201Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 27, 2026John Muir Behavioral Health - 2740 Grant StreetContra Costa2740 Grant Street Concord CA 945201Layoff, permanentHealthcare and Social AssistanceOct 28, 2026Listing
Aug 18, 2026Corteva Agriscience LLCContra Costa901 Loveridge Road Pittsburg CA 945652Layoff, permanentManufacturingOct 30, 2026Listing
Aug 12, 2026EBALDC (907 Lake Street)Contra Costa907 Lake Street San Pablo CA 948062Layoff, permanentPublic AdministrationOct 10, 2026Listing
Aug 12, 2026EBALDC (120 Macdonald Ave)Contra Costa120 Macdonald Ave 907 Lake Street Richmond CA 948011Layoff, permanentPublic AdministrationOct 10, 2026Listing
Jul 8, 2026ChevronContra Costa5001 Executive Parkway, Suite 200 San Ramon CA 94583180Layoff, permanentMining Quarrying Oil and Gas ExractionSep 1, 2026Listing

By employer

Workers affected, most first.
EmployerNoticesWorkers
Chevron1180
John Muir Health1068
Shell Catalyst & Technologies164
Raley's Store No. 336151
John Muir Physician Network38
Corteva Agriscience24
EBALDC23
John Muir Behavioral Health11

By industry

Workers affected, most first.
IndustryNoticesWorkers
Mining Quarrying Oil and Gas Exraction1180
Healthcare and Social Assistance1477
Manufacturing368
Retail Trade151
Public Administration23

Methodology

Source
California Employment Development Department — WARN Report
What is included
Every California WARN notice we have stored for this county, from all years collected, not only the current one. Totals are calculated by us from the notices.
Last updated
Oct 1, 2026, 3:00 PM ET
Download
CSV of the notices on this page
Cite this

Money Tracker Daily, "Layoffs in Contra Costa County, California", updated October 1, 2026, https://moneytrackerdaily.com/trackers/layoffs/california/county/contra-costa. Data: California Employment Development Department, WARN Report.

Spotted an error? See our corrections policy or email editor@moneytrackerdaily.com.