Illumina, Inc. Layoffs - WARN Act Notices
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Illumina, Inc. has a WARN Act filing history stretching from July 2023 to March 2026, with 21 notices affecting 745 employees in total. All filings are in California. All classified notices are layoffs. The largest single filing affected 111 employees in Illumina Way San Diego, CA (March 2024).
Under the WARN Act (Worker Adjustment and Retraining Notification Act), employers with 100 or more employees are required to provide 60 days advance notice before conducting plant closures or mass layoffs. These notices are filed with state labor departments and are public record.
Filing Identities (4)
This page aggregates WARN Act notices filed under 4 related names:
- Illumina Inc. World Headquarters
- Illumina, Inc Worldwide Headquarters
- Illumina, Inc.
- Illumina, Inc. Worldwide Headquarters
Layoff History
Employees affected over time
All WARN Act Notices
| Location | Effective Date | Employees | Type |
|---|---|---|---|
| Illumina Way San Diego, CA | Mar 16, 2026 | 4 | layoff |
| Illumina Way San Diego, CA | Mar 9, 2026 | 1 | layoff |
| Illumina Way San Diego, CA | Feb 17, 2026 | 3 | layoff |
| Illumina Way San Diego, CA | Jan 19, 2026 | 7 | layoff |
| Illumina Way San Diego, CA | Jan 5, 2026 | 28 | layoff |
| Illumina Way San Diego, CA | Jan 5, 2026 | 4 | layoff |
| Illumina Way San Diego, CA | Dec 22, 2025 | 1 | layoff |
| Illumina Way San Diego, CA | Dec 8, 2025 | 7 | layoff |
| Illumina Way San Diego, CA | Nov 11, 2025 | 8 | layoff |
| Illumina Way San Diego, CA | Mar 12, 2024 | 111 | layoff |
| Illumina Way San Diego, CA | Mar 11, 2024 | 111 | layoff |
| Lincoln Centre Drive San Mateo, CA | Sep 6, 2023 | 1 | layoff |
| Lincoln Centre Drive San Mateo, CA | Sep 5, 2023 | 1 | layoff |
| Executive Drive San Diego, CA | Aug 14, 2023 | 76 | layoff |
| Illumina Way San Diego, CA | Aug 14, 2023 | 75 | layoff |
| Executive Drive San Diego, CA | Aug 13, 2023 | 76 | layoff |
| Illumina Way San Diego, CA | Aug 13, 2023 | 75 | layoff |
| Executive Drive San Diego, CA | Jul 21, 2023 | 14 | layoff |
| Illumina Way San Diego, CA | Jul 21, 2023 | 64 | layoff |
| Executive Drive San Diego, CA | Jul 20, 2023 | 14 | layoff |
| Illumina Way San Diego, CA | Jul 20, 2023 | 64 | layoff |