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Thermo Fisher Scientific Layoffs — WARN Notices

10 WARN notices on record affecting 625 workers across 5 counties.

From public state WARN filings (CA). Updated 2026-08-13.

Filing record

WARN notices

10

Distinct filings on record

Workers affected

625

Sum of reported headcounts

Name variants resolved

3

Site/building strings combined

Coverage. California filings run from April 2023 to the present and are rebuilt from the CA EDD fiscal-year archives plus the live rolling report, refreshed hourly. 2023 is a partial year (records begin 25 April 2023). See methodology.

Where Thermo Fisher Scientific filed

CountyFilings
San Diego County6
Los Angeles County1
Sonoma County1
San Mateo County1
Alameda County1

Filings by year

YearFilings
20234
20242
20253
20261

All Thermo Fisher Scientific notices

CountyWorkersLayoff dateNotice date
San Diego County1732026-03-182026-01-27
San Diego County332025-09-152025-07-29
San Diego County522025-09-152025-07-29
Los Angeles County112025-06-282025-04-29
San Diego County742024-05-312024-03-28
Sonoma County742024-02-012023-11-15
San Diego County982023-08-272023-06-29
San Diego County82023-08-222023-06-22
San Mateo County642023-08-222023-06-22
Alameda County382023-08-222023-06-22

Why these filings are grouped

State agencies file this employer under 3 different name strings — usually one per building, store, or site. Kcalbin resolves them to a single employer so the totals above count the company once rather than once per address. The underlying strings are published here so the grouping can be checked.

Track filings like these

Kcalbin WARN Intelligence scores each new filing by county displacement risk and delivers it as it is filed.

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