Employer · WARN Act history · Professional & Technical Services
Illumina, Inc. Worldwide Headquarters
17 workers across 4 WARN notices, primarily in CA - recorded in the current PlainLayoffs dataset.
- 17
- Workers cut
- 4
- WARN notices
- 1
- State
- 4
- Avg / notice
Illumina, Inc. Worldwide Headquarters has 4 recorded WARN filings affecting 17 workers
According to WARN Act filings submitted to state workforce agencies, Illumina, Inc. Worldwide Headquarters has 4 recorded filings covering 17 workers across 1 state, primarily CA, the 5,782nd-largest recorded WARN footprint among 7,009 tracked employers. WARN notices cover qualifying reported events, so this record is not a complete count of the employer's workforce changes.
Illumina, Inc. Worldwide Headquarters is a minor share of Professional & Technical Services WARN activity — under 0.1% of the sector's 21,639 workers across 166 employers, ranking #142 in Professional & Technical Services.
DOL WARN employer filing desk
Employer ILLUMINA-INC · Illumina, Inc. Worldwide Headquarters 17 workers · 4 filings
NOTC-LIGHT · WORK-LIGHT · PHOTO-UNK · RUNWAY-UNK · STAT-SINGLE · BOOK-SINGLE · TYPE-LAYOFF
- NOTC-LIGHT 4 filings
- WORK-LIGHT #5,782
- PHOTO-UNK No peer
- RUNWAY-UNK Runway n/a
- STAT-SINGLE CA
- BOOK-SINGLE 1 agency
- TYPE-LAYOFF 4 layoffs
Stamps derive from filed notice_date, effective_date, workers_affected, state agency source, and filing type in this dataset, not a prediction of future layoffs.
Largest Illumina, Inc. Worldwide Headquarters WARN filings · notice runway
Top 4 rows by workers_affected from this employer's filed notices. Runway = calendar days from notice_date to effective_date when both are published and forward-dated.
- Illumina Way San Diego, CA · Layoff · Professional & Technical Services 8 workers · filed Nov 13, 2025 · 0d runway
- Illumina Way San Diego, CA · Layoff · Manufacturing 4 workers · filed Jan 14, 2026 · 0d runway
- Illumina Way San Diego, CA · Layoff · Professional & Technical Services 4 workers · filed Nov 5, 2025 · 0d runway
- Illumina Way San Diego, CA · Layoff · Manufacturing 1 workers · filed Jan 14, 2026 · 0d runway
Median forward runway across 4 dated filings: 0 days (4 under 60d · 0 at/above 60d · 4 same-day or retroactive).
Employer Profile
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Jan 2026.
WARN Notice History
2026
Illumina Way San Diego, CA · Manufacturing
Effective: Jan 14, 2026
1
workers
Filed Jan 14, 2026
Illumina Way San Diego, CA · Manufacturing
Effective: Jan 14, 2026
4
workers
Filed Jan 14, 2026
2025
Illumina Way San Diego, CA · Professional & Technical Services
Effective: Nov 13, 2025
8
workers
Filed Nov 13, 2025
Illumina Way San Diego, CA · Professional & Technical Services
Effective: Nov 5, 2025
4
workers
Filed Nov 5, 2025
Questions about this Illumina, Inc. Worldwide Headquarters record
What is the largest Illumina, Inc. Worldwide Headquarters WARN filing on record? ▼
The largest row is the mass layoff filed for Illumina Way San Diego, CA on Nov 13, 2025, covering 8 workers in Professional & Technical Services.
Where were Illumina, Inc. Worldwide Headquarters's WARN notices filed? ▼
The record contains 4 mass-layoff filings centered on Illumina Way San Diego, sourced from California EDD. States represented in this record: CA.
Does Illumina, Inc. Worldwide Headquarters's filing history show a recurring pattern? ▼
The filing history spans 2025 through 2026 across 2 calendar years; that recurrence is visible in the dated rows rather than inferred from news coverage.
How much advance notice appears in Illumina, Inc. Worldwide Headquarters's record? ▼
No trustworthy advance-notice runway can be derived from these rows because the source dates are equal, missing, or retroactive.
See also: CA WARN filings · Professional & Technical Services industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Illumina, Inc. Worldwide Headquarters notice history aggregated from state workforce agency filings · September 2026 A WARN filing is a required notice, not a judgment of the employer's management or finances. Coverage follows states with structured public registries; this public-record summary is not legal advice, financial advice, or employment advice.
Every figure on PlainLayoffs is rendered directly from public WARN Act filings and state workforce agency records, no number is typed in by an editor. This employer's notice history is rendered directly from state WARN Act filings. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2026. A WARN filing is a legally required notice, not a judgment of a company's management or financial health; rankings here reflect filed notice volume only.