Illumina has filed 9 WARN notices in California, affecting 63 workers total. All filings were classified as layoffs rather than closures. Filing dates range from Nov 5, 2025 through Jan 14, 2026. Illumina provided an average of 53 days notice before the effective date of these filings. San Diego accounts for 100% of affected workers. Filings in the most recent quarter were lower than the prior quarter, with 2 compared to 7.
| Location | State | Type | Workers | Effective | Filed |
|---|---|---|---|---|---|
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 1 | 2026-03-09 | 2026-01-14 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 4 | 2026-03-16 | 2026-01-14 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 1 | 2025-12-22 | 2025-12-22 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 7 | 2025-12-08 | 2025-12-11 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 3 | 2026-02-17 | 2025-12-04 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 7 | 2026-01-19 | 2025-11-20 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 8 | 2025-11-11 | 2025-11-13 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 28 | 2026-01-05 | 2025-11-06 |
| San Diego 5200 Illumina Way San Diego CA 92122 |
CA | Layoff | 4 | 2026-01-05 | 2025-11-05 |
If you received a layoff notice from Illumina, the WARN Act requires your employer to provide 60 days advance written notice before a mass layoff or plant closing. If your employer gave less than 60 days notice, you may be entitled to back pay and benefits for each day of the shortfall. File for unemployment insurance with your state workforce agency as soon as possible. Review your COBRA options to continue health coverage for up to 18 months. Visit your local America's Job Center for free career counseling and retraining vouchers. These programs exist for exactly this situation.
Apply online at your state workforce agency. You may be eligible before your last day.
Continue your employer health plan for up to 18 months, or compare lower-cost options on the Health Insurance Marketplace.
Employers with 100 or more employees must give 60 days written notice before mass layoffs or plant closings.
Free career counseling, resume help, job search assistance, and retraining programs through CareerOneStop.
Interview prep, job search management, and career planning tools to help you land your next role.
America's Job Centers offer free career counseling, resume help, interview prep, job search assistance, and retraining vouchers for workers affected by WARN Act layoffs. Ask about Rapid Response services.
All data on this site is sourced from official WARN Act filings published by state workforce agencies. Filings are updated regularly but may not reflect same-day submissions. Coverage varies by state.
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