Top 10 US Employers by Total WARN-Notice Workers Affected: 6,943 Employers Tracked
PlainLayoffs ranks 6,943 employers tracked across state WARN Act filings by the cumulative count of workers named in layoff notices. Live SSR query against the employers reference table.
Research period:
United Airlines has the largest recorded WARN footprint of any employer
According to WARN Act filings submitted to state workforce agencies, United Airlines has 42,706 recorded workers affected across 9 filings, the most of any employer. Across all 6,943 employers with a recorded filing, 1,411,142 workers have been affected via 8,798 WARN notices.
Research question
Among 6,943 employers tracked in the PlainLayoffs WARN-notice dataset, which employers carry the highest cumulative worker-impact count, and what share of those impacts are concentrated in a single primary state versus distributed across multiple states?
Methodology
This ranking reflects the data currently in our database, sourced from the agency referenced in the citation below and updated automatically as new filings are processed.
Coverage and exclusions: the source agency occasionally suppresses values for confidentiality, small sample size, or quality control, and suppressed rows are excluded from this ranking rather than shown as zero. If the agency later revises a figure, the revised value replaces the old one automatically the next time our data is refreshed.
Data provenance: we pull each release as it becomes available and normalize it into our database; a later release simply supersedes the one before it, so readers never see a mix of old and new figures on the same page.
Comparability across years: when the source agency revises its release schedule, definitions, or coverage, we note the affected years on the methodology page so readers can compare like-with-like rather than across a changed measurement.
Editorial governance: a named editor reviews every ranking page before publication (see the byline above). If an entity disputes a figure attributed to it, corrections are checked against the official source record before any change is made.
Every number on this page can be traced back to its source by following the entity links and the citation below, so independent verification never requires anything beyond the original public source.
See the methodology page for the complete ETL pipeline, source vintage, and column lineage.
Top 10 US Employers by Total WARN-Notice Workers Affected
Live data: reflects the current dataset
The ranked top 10
Every row below reflects the current 10-record dataset. Reload the page after new data is processed to see the latest values.
| # | Employer | Workers affected | Notices | States | Primary industry |
|---|---|---|---|---|---|
| 1 | United Airlines | 42,706 | 9 | 6 | Transportation & Warehousing |
| 2 | Amazon | 41,418 | 112 | 6 | Retail Trade |
| 3 | Disney | 35,000 | 2 | 1 | Arts, Entertainment & Recreation |
| 4 | Boeing | 33,263 | 54 | 3 | Manufacturing |
| 5 | Intel | 27,438 | 5 | 3 | Manufacturing |
| 6 | Meta Platforms | 22,063 | 8 | 2 | Information Technology |
| 7 | Microsoft | 20,156 | 16 | 1 | Information Technology |
| 8 | Citigroup | 20,000 | 1 | 1 | Finance & Insurance |
| 9 | American Airlines | 19,230 | 6 | 5 | Transportation & Warehousing |
| 10 | Delta Air Lines | 17,074 | 2 | 2 | Transportation & Warehousing |
Source: U.S. Department of Labor and state Departments of Labor, Worker Adjustment and Retraining Notification (WARN) Act filings. Values reflect the current dataset, refreshed as new filings are processed. U.S. Department of Labor and state Departments of Labor, Worker Adjustment and Retraining Notification (WARN) Act filings. Values reflect the current dataset, refreshed as new filings are processed.
Findings
Top entity in the ranking
The top-ranked record in this dataset is United Airlines, with a value of 42,706 on the Workers affected column. The full top-10 set is rendered in the table above. Every value derives from the underlying employers table; no number is hardcoded into this page. When the U.S. Department of Labor and state Departments of Labor publishes a revision and our ETL pipeline reingests, the ranking and the prose around it update on the next page load.
Distribution shape
The gap between the top-ranked record (42,706) and the 10th-ranked record (17,074) characterizes how concentrated the top of the distribution is. Where the top value is many multiples of the median value of the visible set, the population is highly concentrated, a small number of entities accumulate the bulk of the measured quantity. Where the top and bottom of the visible set are close together, the distribution is relatively flat across the top end. The full distribution beyond this top-10 cut is summarized in the aggregate context section below and explored in the linked entity profiles.
Aggregate context
Across the full employers population, the aggregate query returns 6,943 tracked employers with a combined 1,411,142 workers named across 8,798 WARN notices, an average of 203 workers per employer. These anchors situate the top-10 ranking against the underlying population. The methodology page documents the exact filter applied by the aggregate query (records with null or zero values on the ranking column are excluded). The aggregate row is computed by the same database engine that renders the ranking above, against the same snapshot.
Source provenance
The records in this ranking originate from U.S. Department of Labor and state Departments of Labor, specifically the Worker Adjustment and Retraining Notification (WARN) Act filings. PlainLayoffs ingests the source vintage published by the agency, transforms it into a normalized SQLite schema, and serves it from a read-only snapshot. Every render of this page is a fresh SELECT against that snapshot, there is no static export carrying stale numbers, and the edge cache lifetime is bounded by the portal middleware so that a reingested dataset propagates within hours. The methodology page documents the source URL, the vintage date, and the transformation steps applied during ETL.
Why this ranking matters
Rankings like this one let a reader scan a population quickly and identify outliers, concentrations, and patterns that warrant deeper investigation. The detail pages linked from each entity in the table above give the full per-entity context: time-series history where available, related metrics from adjacent tables, and links onward to the underlying source records. The methodology page explains how an entity earns inclusion in the dataset and how the ranking column is computed at the source.
What this analysis cannot tell us
The federal Worker Adjustment and Retraining Notification (WARN) Act requires advance notice for layoffs of 50 or more workers at single sites of employment with 100 or more employees, with exceptions for unforeseeable business circumstances, natural disasters, and faltering-company filings, smaller layoffs and exempt actions are not captured. State Mini-WARN laws extend coverage in some jurisdictions (notably California, New Jersey, and New York) to smaller events; coverage thresholds vary by state, so cumulative employer totals reflect a mix of federal-WARN and state-WARN filings. Workers-affected counts are the employer-filed projected impact at notice time; actual separations can differ if a layoff is reduced, postponed, or expanded after the notice. Same employer may file under multiple legal-entity names or under parent/subsidiary names; PlainLayoffs slug normalization attempts to consolidate but cannot capture every corporate-name variant. State-by-state filing platforms differ in completeness and lag, some state Departments of Labor publish notices in near-real-time while others lag by weeks. This page reports figures as recorded; it is not advice on severance entitlements, unemployment-insurance eligibility, or any specific employment decision.
Secondary cut from the same source
Top 10 employers by number of distinct WARN-notice filings
Sources
- U.S. Department of Labor, Employment and Training Administration WARN Act Compliance - https://www.dol.gov/agencies/eta/layoffs/warn
- California Employment Development Department, WARN Reports - https://edd.ca.gov/jobs_and_training/warn-notices/
- New York State Department of Labor, WARN Notices - https://dol.ny.gov/warn-notices