Employer · WARN Act history · Other Services
Amentum
686 workers across 10 WARN notices, primarily in WA - recorded in the current PlainLayoffs dataset.
- 686
- Workers cut
- 10
- WARN notices
- 4
- States
- 69
- Avg / notice
Amentum has 10 recorded WARN filings affecting 686 workers
According to WARN Act filings submitted to state workforce agencies, Amentum has 10 recorded filings covering 686 workers across 4 states, primarily WA, the 255th-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.
Amentum is a minor share of Other Services WARN activity — 0.1% of the sector's 460,348 workers across 3,497 employers, ranking #86 in Other Services.
How 686 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.
Amentum WARN workers by state
Sum of workers_affected on each filing row, grouped by the state agency that received the notice, not a corporate headcount by HQ state.
Amentum WARN workers by year and state
Sum of workers_affected on each filing row, crossed by calendar year and filing state, for the top 4 states by total workers affected.
| Year | TX | WA | VA | MD | Total |
|---|---|---|---|---|---|
| 2026 | – | – | – | 9 | 9 |
| 2024 | – | – | 53 | – | 53 |
| 2023 | – | 3 | – | – | 3 |
| 2022 | 178 | 194 | – | – | 372 |
| 2021 | 92 | – | – | – | 92 |
| 2020 | – | 26 | 131 | – | 157 |
Amentum city concentration · lead-city
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.
New Boston leads at 39.4% of named-city WARN workers across 8 cities (686 workers with a city on the filing).
Lead city New Boston · 39.4% · 8 named cities · top-3 share 80.9%
DOL WARN employer filing desk
Employer AMENTUM · Amentum 686 workers · 10 filings
NOTC-MID · WORK-HEAVY · PHOTO-UNK · RUNWAY-UNDER · STAT-MULTI · BOOK-MULTI · TYPE-MIX
- NOTC-MID 10 filings
- WORK-HEAVY #255
- PHOTO-UNK No peer
- RUNWAY-UNDER 60d
- STAT-MULTI 4 states
- BOOK-MULTI 4 agencies
- TYPE-MIX 1C/9L
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 Amentum WARN filings · notice runway
Top 5 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.
- Oak Harbor, WA · Layoff · Other Services 194 workers · filed Oct 31, 2022 · 61d runway
- New Boston, TX · Layoff · Other Services 178 workers · filed Jan 28, 2022 · 58d runway
- New Boston, TX · Layoff · Other Services 92 workers · filed Aug 30, 2021 · 60d runway
- Virginia Beach, VA · Layoff · Other Services 91 workers · filed Sep 17, 2020 · 39d runway
- Falls Church & Springfield, VA · Closure · Other Services 53 workers · filed Jul 26, 2024 · 63d runway
Median forward runway across 10 dated filings: 60 days (5 under 60d · 5 at/above 60d ).
What changed - Amentum WARN filings by year
Computed from filed notice dates in this dataset (calendar years), not a vendor release label. Latest compared pair: .
- 2022 → 2023: WARN workers affected for Amentum fell from 372 in 2022 to 3 in 2023; notice count fell from 2 to 1.
- 2021 → 2022: WARN workers affected for Amentum rose from 92 in 2021 to 372 in 2022; notice count rose from 1 to 2.
- 2020 → 2021: WARN workers affected for Amentum fell from 157 in 2020 to 92 in 2021; notice count fell from 4 to 1.
- 2023 → 2024: WARN workers affected for Amentum rose from 3 in 2023 to 53 in 2024; notice count held from 1 to 1.
Site-wide YoY movers: /changes (RSS). Dataset corrections: /changelog. Year hubs: /year/2026.
Where Amentum 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. Amentum is in the 501-1.5k bucket (#255 of 7,009 by workers affected).
Employer Profile
- Primary State
- WA
- Primary Industry
- Other Services
- First Notice
- Mar 13, 2020
- Latest Notice
- Mar 9, 2026
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Mar 2026.
WARN Notice History
2026
Prince George’s, MD · Professional & Technical Services
Effective: May 3, 2026
9
workers
Filed Mar 9, 2026
2024
Falls Church & Springfield, VA · Other Services
Effective: Sep 27, 2024
53
workers
Filed Jul 26, 2024
2023
Everett, WA · Other Services
Effective: Jul 30, 2023
3
workers
Filed May 31, 2023
2022
Oak Harbor, WA · Other Services
Effective: Dec 31, 2022
194
workers
Filed Oct 31, 2022
New Boston, TX · Other Services
Effective: Mar 27, 2022
178
workers
Filed Jan 28, 2022
2021
New Boston, TX · Other Services
Effective: Oct 29, 2021
92
workers
Filed Aug 30, 2021
2020
Virginia Beach, VA · Other Services
Effective: Oct 26, 2020
91
workers
Filed Sep 17, 2020
Whidbey Island, WA · Other Services
Effective: Aug 28, 2020
13
workers
Filed Jun 30, 2020
Chantilly, VA · Other Services
Effective: Jun 16, 2020
40
workers
Filed May 18, 2020
Whidbey Island, WA · Other Services
Effective: May 12, 2020
13
workers
Filed Mar 13, 2020
Questions about this Amentum record
What is the largest Amentum WARN filing on record? ▼
The largest row is the mass layoff filed for Oak Harbor, WA on Oct 31, 2022, covering 194 workers in Other Services.
Where were Amentum's WARN notices filed? ▼
The filings name Prince George’s, Falls Church & Springfield, and Everett, among 8 named cities; together they form 1 facility closure and 9 mass-layoff filings sourced from Maryland DLLR and Virginia Works and Washington ESD and Texas Workforce Commission. States represented in this record: MD, TX, VA, WA.
Where is Amentum's WARN footprint concentrated by city? ▼
New Boston leads at 39.4% of named-city WARN workers across 8 cities (686 workers with a city on the filing).
Does Amentum's filing history show a recurring pattern? ▼
The filing history spans 2020 through 2026 across 6 calendar years; that recurrence is visible in the dated rows rather than inferred from news coverage.
How much advance notice appears in Amentum's record? ▼
The measurable notice runway is between 30 and 59 days; the WARN pay tool can value the gap, but only a qualified adviser can determine whether an exception applies.
See also: WA WARN filings · Other Services industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Amentum 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.