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Contra Costa County, California WARN notices

Contra Costa County, California has 308 non-cancelled imported WARN notices reporting 18,751 workers affected. 19 notices have future effective dates. These totals cover imported records only.

What the official notice history shows

During the last 365 days, this imported archive contains 37 eligible official filings for Contra Costa County, California, reporting 803 affected workers. 0 worker counts are unavailable. The newest official notice date is Sep 28, 2026.

308 non-cancelled direct government records and 0 attributed secondary records appear in the full archive. Recent official event types: layoff, closure. These figures describe notices, not unique people or completed layoffs. Grouped company names do not establish ownership.

Compare original weekly and monthly official-data reports → · How dates, names and counts are interpreted

308Non-cancelled notices
18,751Reported workers
19Future effective dates
Coverage is limited to connected sources and imported date ranges. 0 notices have unavailable worker counts. Company groups match normalized names; aliases below preserve exact employer names from filings. Methodology →

Notice history by year

202633 notices · 729 reported workers
202536 notices · 1,226 reported workers
202449 notices · 1,831 reported workers
202324 notices · 1,720 reported workers
202214 notices · 878 reported workers
202110 notices · 655 reported workers
2020109 notices · 8,469 reported workers
201914 notices · 1,858 reported workers
201814 notices · 972 reported workers
20175 notices · 413 reported workers
Corteva Agriscience →California →Pittsburg →Shell Catalyst & Technologies →Martinez →John Muir Physician Network - 1450 Treat Blvd. →Walnut Creek →John Muir Behavioral Health - 2740 Grant Street →Concord →John Muir Health - 177 La Casa Via →John Muir Health - 2740 Grant Street →John Muir Health - 3480 Buskirk Ave. →Pleasant Hill →John Muir Health - 5003 Commercial Circle →John Muir Health - 2540 East Street →

Filings and attributed reports

Company / locationWorkersEffective dateNotice dateType / source
Hunt & SonsContra Costa, CA8Jan 1, 2025Oct 29, 2024layoffSource ↗
Shell Catalyst & TechnologiesContra Costa, CA59Dec 31, 2024Oct 16, 2024closureSource ↗
Kaiser Foundation HospitalsContra Costa, CA1Dec 6, 2024Oct 7, 2024layoffSource ↗
Corteva AgriscienceContra Costa, CA18Jan 3, 2025Sep 26, 2024layoffSource ↗
Kaiser Foundation HospitalsContra Costa, CA1Nov 22, 2024Sep 23, 2024layoffSource ↗
AT&TContra Costa, CA10Oct 25, 2024Aug 26, 2024layoffSource ↗
AT&TContra Costa, CA10Oct 25, 2024Aug 26, 2024layoffSource ↗
Five9Ste. 350 San Ramon, CA30Aug 20, 2024Aug 20, 2024layoffSource ↗
Silgan ContainersContra Costa, CA44Oct 14, 2024Aug 13, 2024temporarySource ↗
AT&TContra Costa, CA3Sep 24, 2024Jul 26, 2024layoffSource ↗
AT&TContra Costa, CA5Sep 24, 2024Jul 26, 2024layoffSource ↗
SunPowerSuite 600 Richmond, CA182Sep 24, 2024Jul 26, 2024layoffSource ↗
MoreFlavorSte 1 Pittsburg, CA51Oct 20, 2024Jul 19, 2024closureSource ↗
Moxion PowerContra Costa, CA244Aug 5, 2024Jul 19, 2024closureSource ↗
Rodan & FieldsSuite 450 San Ramon, CA78Sep 13, 2024Jul 15, 2024layoffSource ↗
Kohana CoffeeContra Costa, CA51Aug 30, 2024Jun 28, 2024closureSource ↗
Corteva AgriscienceContra Costa, CA4Sep 27, 2024Jun 25, 2024layoffSource ↗
AT&T - 5001Contra Costa, CA19Aug 24, 2024Jun 25, 2024layoffSource ↗
Corteva AgriscienceContra Costa, CA2Nov 8, 2024Jun 25, 2024layoffSource ↗
AT&T - 5005Contra Costa, CA37Aug 24, 2024Jun 25, 2024layoffSource ↗
Moxion PowerContra Costa, CA101Aug 20, 2024Jun 21, 2024layoffSource ↗
Fresenius USAContra Costa, CA6Mar 28, 2025May 16, 2024closureSource ↗
Fresenius USAContra Costa, CA42Dec 20, 2024May 16, 2024closureSource ↗
Fresenius USAContra Costa, CA14Oct 25, 2024May 16, 2024closureSource ↗
Fresenius USAContra Costa, CA123Aug 16, 2024May 16, 2024closureSource ↗

308 notices · Source check Oct 8, 2026

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