Ranking · WARN Act records

50 Largest Mass Layoff Events

The single largest layoff and closure events on record, ranked by workers affected. Every row is a real WARN Act filing — click any employer for its full notice history.

36,000
Largest event
United Airlines
#1 employer
420,596
Top-50 total

Each event is a real notice filed under the federal Worker Adjustment and Retraining Notification (WARN) Act — the 1988 law that makes employers with 100 or more staff give 60 days' written warning before a mass layoff (generally 500+ workers at one site, or 50+ when that is at least a third of the workforce) or a plant closing. Because the count is per filing, a company that ran several rounds can appear more than once; click any employer to see its full notice history.

The ten biggest single layoff events

Workers affected by one WARN Act filing

workers

What this shows A small number of airline, entertainment and tech closures account for the very largest single events on record.

Source State WARN Act filings As of 2026
Rank Employer Workers
1 United Airlines
Chicago, IL
36,000
2 Disney
Burbank, CA
28,000
3 Citigroup
New York, NY
20,000
4 American Airlines
Fort Worth, TX
19,000
5 Amazon
Seattle, WA
18,000
6 Delta Air Lines
Atlanta, GA
17,000
7 Boeing
Seattle, WA
16,000
8 Intel
Hillsboro, OR
15,000
9 Bed Bath Beyond
Union, NJ
14,000
10 Nokia
Dallas, TX
14,000
11 Google
Mountain View, CA
12,000
12 Intel
Hillsboro, OR
12,000
13 Meta Platforms
Menlo Park, CA
11,000
14 Meta Platforms
Menlo Park, CA
10,000
15 Microsoft
Redmond, WA
10,000
16 Walgreens Boots Alliance
Deerfield, IL
10,000
17 David's Bridal
Nationwide, WA
9,266
18 Amazon
Seattle, WA
9,000
19 Tuesday Morning
Dallas, TX
8,000
20 Salesforce
San Francisco, CA
7,000
21 Disney
Burbank, CA
7,000
22 Southwest Airlines
Dallas, TX
7,000
23 Uber Technologies
San Francisco, CA
6,700
24 Rivian Automotive
Normal, IL
6,700
25 Dell Technologies
Round Rock, TX
6,650
26 Boeing
Puget Sound Area, WA
5,798
27 Cisco Systems
San Jose, CA
5,000
28 CVS Health
Woonsocket, RI
5,000
29 Sears Holdings
Hoffman Estates, IL
5,000
30 Zachry Industrial, Inc. (Sabine Pass)
Sabine Pass, TX
4,072
31 General Motors
Detroit, MI
4,000
32 HP
Palo Alto, CA
4,000
33 Cisco Systems
San Jose, CA
4,000
34 BP
Houston, TX
4,000
35 IBM
Armonk, NY
3,900
36 Twitter
San Francisco, CA
3,700
37 RaterLabs
Kirkland, WA
3,657
38 Silicon Valley Bank
Santa Clara, CA
3,500
39 Lord and Taylor
New York, NY
3,500
40 Haliburton Energy Services-N. Sam Houston
Houston, TX
3,500
41 Gebbers Farms, Etal
Brewster, WA
3,465
42 Goldman Sachs
New York, NY
3,200
43 Ford Motor
Dearborn, MI
3,000
44 SAP
Newtown Square, PA
3,000
45 WeWork
New York, NY
3,000
46 Peloton Interactive
New York, NY
2,800
47 Tesla
Austin, TX
2,688
48 Wells Fargo
San Francisco, CA
2,500
49 Pier 1 Imports
Fort Worth, TX
2,500
50 3M
Maplewood, MN
2,500

Source: WARN Act notices filed with state workforce agencies WARN Act notices filed with state workforce agencies The WARN Act (Worker Adjustment and Retraining Notification Act) requires employers with 100+ employees to provide 60-day advance notice of mass layoffs affecting 50+ workers