Employer · WARN Act history · Transportation & Warehousing
Diamond Transportation Services
970 workers across 4 WARN notices, primarily in VA - recorded in the current PlainLayoffs dataset.
- 970
- Workers cut
- 4
- WARN notices
- 2
- States
- 243
- Avg / notice
Diamond Transportation Services has 4 recorded WARN filings affecting 970 workers
According to WARN Act filings submitted to state workforce agencies, Diamond Transportation Services has 4 recorded filings covering 970 workers across 2 states, primarily VA, the 167th-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.
Diamond Transportation Services is a minor share of Transportation & Warehousing WARN activity — 0.6% of the sector's 158,362 workers across 311 employers, ranking #20 in Transportation & Warehousing.
How 970 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.
Diamond Transportation Services 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.
Diamond Transportation Services WARN workers by year and state
Sum of workers_affected on each filing row, crossed by calendar year and filing state, for the top 2 states by total workers affected.
| Year | MD | VA | Total |
|---|---|---|---|
| 2026 | 571 | 144 | 715 |
| 2025 | 194 | 61 | 255 |
Diamond Transportation Services 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.
78.9% of named-city WARN workers for Diamond Transportation Services sit in Prince George's (765 of 970).
Lead city Prince George's · 78.9% · 3 named cities · top-3 share 100%
DOL WARN employer filing desk
Employer DIAMOND-TRAN · Diamond Transportation Services 970 workers · 4 filings
NOTC-LIGHT · WORK-HEAVY · PHOTO-UNK · RUNWAY-SHORT · STAT-MULTI · BOOK-DUAL · TYPE-MIX
- NOTC-LIGHT 4 filings
- WORK-HEAVY #167
- PHOTO-UNK No peer
- RUNWAY-SHORT 10d
- STAT-MULTI 2 states
- BOOK-DUAL 2 agencies
- TYPE-MIX 3C/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 Diamond Transportation Services 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.
- Prince George's, MD · Closure · Transportation & Warehousing 571 workers · filed May 13, 2026 · retroactive dates
- Prince George's, MD · Layoff · Transportation & Warehousing 194 workers · filed Nov 10, 2025 · 20d runway
- Fairfax County, VA · Closure · Transportation & Warehousing 144 workers · filed May 12, 2026 · 0d runway
- Springfield, VA · Closure · Transportation & Warehousing 61 workers · filed Nov 7, 2025 · 23d runway
Median forward runway across 4 dated filings: 10 days (4 under 60d · 0 at/above 60d · 2 same-day or retroactive).
What changed - Diamond Transportation Services WARN filings by year
Computed from filed notice dates in this dataset (calendar years), not a vendor release label. Latest compared pair: .
- 2025 → 2026: WARN workers affected for Diamond Transportation Services rose from 255 in 2025 to 715 in 2026; notice count held from 2 to 2.
Site-wide YoY movers: /changes (RSS). Dataset corrections: /changelog. Year hubs: /year/2026.
Where Diamond Transportation Services 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. Diamond Transportation Services is in the 501-1.5k bucket (#167 of 7,009 by workers affected).
Employer Profile
- Primary State
- VA
- Primary Industry
- Transportation & Warehousing
- First Notice
- Nov 7, 2025
- Latest Notice
- May 13, 2026
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: May 2026.
WARN Notice History
2026
Prince George's, MD · Transportation & Warehousing
Effective: May 12, 2026
571
workers
Filed May 13, 2026
Fairfax County, VA · Transportation & Warehousing
Effective: May 12, 2026
144
workers
Filed May 12, 2026
2025
Prince George's, MD · Transportation & Warehousing
Effective: Nov 30, 2025
194
workers
Filed Nov 10, 2025
Springfield, VA · Transportation & Warehousing
Effective: Nov 30, 2025
61
workers
Filed Nov 7, 2025
Questions about this Diamond Transportation Services record
What is the largest Diamond Transportation Services WARN filing on record? ▼
The largest row is the facility closure filed for Prince George's, MD on May 13, 2026, covering 571 workers in Transportation & Warehousing.
Where were Diamond Transportation Services's WARN notices filed? ▼
The filings name Prince George's, Fairfax County, and Springfield; together they form 3 facility closures and 1 mass-layoff filing sourced from Maryland DLLR and Virginia Works. States represented in this record: MD, VA.
Where is Diamond Transportation Services's WARN footprint concentrated by city? ▼
78.9% of named-city WARN workers for Diamond Transportation Services sit in Prince George's (765 of 970).
Does Diamond Transportation Services'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 Diamond Transportation Services's record? ▼
The measurable notice runway is under 30 days; compare the filing dates with the federal 60-day baseline before estimating any possible notice-pay shortfall. Of 4 filings on record, 1 dated effective before the notice itself and 1 without a published effective date are excluded from that figure.
See also: VA WARN filings · Transportation & Warehousing industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Diamond Transportation Services 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.