3M Layoffs & WARN Notices — 4,195 Workers Affected

Name: 3M WARN Act Layoff Notices
Creator: LaborCurrent
License: https://creativecommons.org/publicdomain/zero/1.0/

All WARN Act mass layoff and plant closure notices filed by 3M.

Data updated 2023-06-30

Total Notices

1,126

Workers Affected

States

2001

First Filing

2023

Latest Filing

Data Insights

Industry Breakdown

Workers affected by industry sector

Layoff Types

Workers affected by notice type

3M WARN Act Filings

WARN Act layoff notices
Company	Location	Employees	Notice Date	Type	Source
3M - HQ	Maplewood, MN	1,100	2023-06-30		Agency WARN listing
3M's Wonewok	Park Rapids, MN	40	2023-06-30		Agency WARN listing
3M Company DBA 3M Oral Care	Monrovia, CA	464	2020-04-27	Layoff	Agency WARN listing
3M	Irvine, CA	264	2020-03-27	Layoff	Agency WARN listing
3M-Research Blvd	Austin, TX	113	2018-10-12		Source document
3M	Elyria, OH	136	2017-03-29		Agency WARN listing
3M	Milford, OH	135	2016-08-12		Agency WARN listing
3M	Brookville, OH	75	2015-10-30		Agency WARN listing
3M	Enfield, CT	69	2014-07-29	Closure	Agency WARN listing
3M, DBA Ceradyne ACO (Ceradyne, Inc.)	Louisville, KY	93	2013-04-08	Layoff	Agency WARN listing
3M Company (Western Distribution Center)	Ontario, CA	132	2011-04-08		Agency WARN listing
3M	Ardmore, OK	125	2010-06-16		Source document
3M	Columbia, MO	21	2009-04-30	Layoff	Agency WARN listing
3M	Simi Valley, CA	109	2009-04-13		Agency WARN listing
3M	Petaluma, CA	105	2009-02-01		Agency WARN listing
3M Precision Optics	Cincinnati, OH	106	2008-10-17		Agency WARN listing
3M Precision Optics	Cincinnati, OH	78	2008-02-07		Agency WARN listing
3M - Columbia	Columbia, MO	240	2007-10-04	Layoff	Agency WARN listing
3M	Belle Mead, NJ	87	2007-10-01		Agency WARN listing
3M Precision Optics	Cincinnati, OH	148	2005-12-05		Agency WARN listing

3M Layoff FAQ

Is 3M laying off in 2026?

3M has no 2026 WARN notices on record. The most recent WARN Act filing was in 2023.

How many layoffs has 3M had?

3M has filed 24 WARN Act notices affecting a total of 4,195 workers across 10 states.

When was 3M's most recent layoff?

3M's most recent WARN Act filing was on 2023-06-30.

What states has 3M laid off workers in?

3M has filed WARN Act notices in: California, Connecticut, Kentucky, Minnesota, Missouri, New Jersey, Ohio, Oklahoma, Pennsylvania, Texas.

What is the WARN Act?

The Worker Adjustment and Retraining Notification (WARN) Act is a federal law that requires employers with 100 or more employees to provide 60 calendar days' advance notice of plant closings and mass layoffs.

How do I get notified about 3M layoffs?

Subscribe using the form above to receive free daily email alerts whenever new WARN Act notices are filed. You can also set up custom filters and webhooks with a paid API plan at laborcurrent.com/pricing.

Latest Layoff Reports

November 2026 report October 2026 report September 2026 report

SEC Filings & Hiring Signals

Cross-dataset signals for 3M: SEC 8-K event filings and H-1B labor condition applications shown alongside the WARN notices above. They are linked to this employer by matching its name (or an SEC ticker or CIK we assign to it) — the link is an algorithmic estimate, not verified by the SEC, the Department of Labor or any state agency, and the filings are not restricted to the same period as the notices. Matching rules: methodology.

Filed 2026-10-20

Filed 2026-10-19

Filed 2026-09-10

Filed 2026-08-19

Filed 2026-07-21

419 H-1B LCA petitions filed (FY2010–FY2026) — check H-1B layoff risk →