Employer · WARN Act history · Manufacturing
ArcelorMittal USA
2,477 workers across 2 WARN notices, primarily in IN - recorded in the current PlainLayoffs dataset.
- 2,477
- Workers cut
- 2
- WARN notices
- 1
- State
- 1,239
- Avg / notice
ArcelorMittal USA has 2 recorded WARN filings affecting 2,477 workers
According to WARN Act filings submitted to state workforce agencies, ArcelorMittal USA has 2 recorded filings covering 2,477 workers across 1 state, primarily IN, the 56th-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.
ArcelorMittal USA accounts for 1.2% of Manufacturing's 211,445 WARN-laid-off workers across 776 tracked employers in the dataset — #9 in Manufacturing by workers affected.
How 2,477 workers split by filing year
Calendar-year totals from WARN notice_date fields in this dataset, the same figures summed in the notice history below.
ArcelorMittal USA city concentration · single-city dominant
Named cities on WARN filing rows only (city blank on a filing is omitted). Shares are of the city-tagged worker total, not every notice in the record.
98.7% of named-city WARN workers for ArcelorMittal USA sit in Burns Harbor (2,444 of 2,477).
Lead city Burns Harbor · 98.7% · 2 named cities · top-3 share 100%
DOL WARN employer filing desk
Employer ARCELORMITTA · ArcelorMittal USA 2,477 workers · 2 filings
NOTC-LIGHT · WORK-TOP · PHOTO-UNK · RUNWAY-OVER · STAT-SINGLE · BOOK-SINGLE · TYPE-MIX
- NOTC-LIGHT 2 filings
- WORK-TOP #56
- PHOTO-UNK No peer
- RUNWAY-OVER 32d
- STAT-SINGLE IN
- BOOK-SINGLE 1 agency
- TYPE-MIX 1C/1L
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 ArcelorMittal USA WARN filings · notice runway
Top 2 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.
- Burns Harbor, IN · Layoff · Manufacturing 2,444 workers · filed Nov 21, 2008 · 65d runway
- East Chicago, IN · Closure · Manufacturing 33 workers · filed Apr 13, 2020 · retroactive dates
Median forward runway across 2 dated filings: 32 days (1 under 60d · 1 at/above 60d · 1 same-day or retroactive).
What changed - ArcelorMittal USA WARN filings by year
Computed from filed notice dates in this dataset (calendar years), not a vendor release label. Latest compared pair: .
- 2008 → 2020: WARN workers affected for ArcelorMittal USA fell from 2,444 in 2008 to 33 in 2020; notice count held from 1 to 1.
Site-wide YoY movers: /changes (RSS). Dataset corrections: /changelog. Year hubs: /year/2020.
Where ArcelorMittal USA Falls Among Tracked Employers
7,009 employers with a WARN filing, bucketed by total workers affected
Bucket counts (employers by total workers affected, as of September 2026): 1-10: 955; 11-50: 1,411; 51-150: 3,067; 151-500: 1,205; 501-1.5k: 273; 1.5k-5k: 72; 5k-15k: 16; 15k+: 10. ArcelorMittal USA is in the 1.5k-5k bucket (#56 of 7,009 by workers affected).
Employer Profile
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Apr 2020.
WARN Notice History
2020
East Chicago, IN · Manufacturing
Effective: Apr 12, 2020
33
workers
Filed Apr 13, 2020
2008
Burns Harbor, IN · Manufacturing
Effective: Jan 25, 2009
2,444
workers
Filed Nov 21, 2008
Questions about this ArcelorMittal USA record
What is the largest ArcelorMittal USA WARN filing on record? ▼
The largest row is the mass layoff filed for Burns Harbor, IN on Nov 21, 2008, covering 2,444 workers in Manufacturing.
Where were ArcelorMittal USA's WARN notices filed? ▼
The filings name East Chicago and Burns Harbor; together they form 1 facility closure and 1 mass-layoff filing sourced from Indiana DWD. States represented in this record: IN.
Where is ArcelorMittal USA's WARN footprint concentrated by city? ▼
98.7% of named-city WARN workers for ArcelorMittal USA sit in Burns Harbor (2,444 of 2,477).
Does ArcelorMittal USA's filing history show a recurring pattern? ▼
The filing history spans 2008 through 2020 across 2 calendar years; that recurrence is visible in the dated rows rather than inferred from news coverage.
How much advance notice appears in ArcelorMittal USA's record? ▼
The measurable notice runway clears the federal 60-day baseline; use the dated filing history to see which location and event produced it. Of 2 filings on record, 1 dated effective before the notice itself is excluded from that figure.
See also: IN WARN filings · Manufacturing industry WARNs · WARN Act guide · largest WARN employers
Source: State WARN Act layoff registries ArcelorMittal USA 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.