Missouri WARN Act and Layoff Notice Requirements
Federal WARN sets the layoff-notice rules in Missouri. Here's how it works, where MO publishes WARN notices, the Rapid Response help available, and what employees should do.
No separate general state mini-WARN law was identified through the official sources reviewed as of July 24, 2026. Covered layoffs may still fall under the federal WARN Act (generally 60 days' notice at employers with 100+ employees).
Private lawsuit in federal district court. Missouri Office of Workforce Development (Rapid Response) receives or publishes WARN notices and may provide Rapid Response services.
Recent Missouri notices in our national tracker
3 filings from Missouri appear in the most recent national WARN data we track, refreshed Sep 18, 2026. This is a recent slice, not a complete MO record — the official state list below is the authoritative source for whether your employer filed.
| Employer | Location | Workers | Filed |
|---|---|---|---|
| St. Louis Post-Dispatch | Maryland Heights | 3 | 09/03/2026 |
| Springfield Mechanical Services, Inc. (SMSI) | Springfield | 53 | 09/01/2026 |
| Cornerstone Building Brands | Kearney | 61 | 08/20/2026 |
At a glance
Federal WARN vs Missouri
The federal WARN Act is the nationwide baseline: it generally requires 60 days' written notice for a covered plant closing or mass layoff at employers with 100+ employees, with remedies of back pay and benefits enforced through the courts. Missouri does not add a separate general layoff-notice law, so federal WARN is the governing standard here.
Who must receive notice
Employees
- Affected employees or their representative (federal WARN)
Government
- Missouri Office of Workforce Development (Rapid Response)
- Chief elected local official (federal WARN)
Find official Missouri WARN notices
The Missouri Office of Workforce Development publishes annual WARN notice lists (for example, jobs.mo.gov/warn/2026) showing the employer, location, number of affected workers, and layoff or closure dates. Open the Missouri WARN page and select the year to review filings.
Open the official MO WARN noticesYou can also track recent filings in the LayoffNext WARN Radar — then confirm details against the official MO source above.
Browse the MO notice list
Missouri posts notices as a web page rather than a searchable database, so you are scanning rather than querying.
- 1Open the notices page and use your browser's find function (Ctrl+F or Cmd+F) on your employer's legal name.
- 2Check whether the page is split by year — older filings often move to a separate archive page that the find function will not reach.
- 3Compare the notice date against your own last day. A notice filed after you were told is a different situation from one filed weeks before.
- 4Save a copy of the entry, since these pages are edited in place.
Penalties & employee remedies
Because Missouri has no statute of its own, the remedies are federal: back pay and benefits for the violation period, plus a possible civil penalty payable to local government.
Back pay
Back pay and benefits for each day of violation, capped at the lesser of 60 days or one-half the days the employee worked.
Civil penalty
Up to $500 per day to the local government, avoidable if the employer pays affected employees within three weeks of ordering the layoff.
How to raise it
There is no Missouri agency complaint route for a federal WARN shortfall — it is pursued in court. Separately, Missouri Office of Workforce Development (Rapid Response) provides Rapid Response and reemployment services regardless of whether WARN applied.
Major exceptions & special cases
- Federal WARN's three exceptions apply — faltering company, unforeseeable business circumstances, and natural disaster. Missouri adds none.
Remote workers
Federal WARN follows the single site of employment, which for a remote worker is often the site they report to rather than their home. Fact-specific.
Temporary layoffs
Whether a temporary layoff or furlough triggers notice can depend on its expected length and the specific rule — verify with the agency for your situation.
What an employee should do in Missouri
- 1Check the MO WARN list to see whether your layoff was reported. The Missouri Office of Workforce Development publishes annual WARN notice lists (for example, jobs.mo.gov/warn/2026) showing the employer, location, number of affected workers, and layoff or closure dates. Open the Missouri WARN page and select the year to review filings.
- 2Contact Missouri Office of Workforce Development (Rapid Response) for Rapid Response and reemployment help — this is available whether or not WARN applied to your layoff.
- 3Confirm your Missouri final-paycheck deadline and file your Missouri unemployment claim; both run on their own clocks, independent of WARN.
- 4If notice looks short, evaluate it under federal WARN with an attorney — it is enforced in court, not by an agency.
Missouri scenarios
Finding a Missouri WARN filing
Facts: You want to confirm whether your employer filed a notice.
The Missouri Office of Workforce Development publishes annual WARN notice lists (for example, jobs.mo.gov/warn/2026) showing the employer, location, number of affected workers, and layoff or closure dates. Open the Missouri WARN page and select the year to review filings. Search the current list for your employer's name and the reported dates.
A large Missouri layoff with no notice
Facts: A Missouri employer cuts a large share of one site without advance notice.
With no state statute, the only question is whether federal WARN applied — the site headcount and the 33%/500 tests decide it. If it did and notice was short, the remedy is federal back pay pursued in court. Missouri Office of Workforce Development (Rapid Response) can help either way.
Missouri WARN Act FAQ
Does Missouri have a mini-WARN law?+
Where does Missouri publish WARN notices?+
Who do I contact in Missouri after a layoff?+
What can a Missouri employee do if no notice was given?+
Does a Missouri employer have to give 60 days' notice?+
Does WARN cover a remote employee living in Missouri?+
Nearby states
Missouri unemploymentRelated
Sources & methodology
This page summarizes Missouri's layoff-notice rules from official government sources and links to each. Coverage and outcomes depend on the employer, worksite, headcount, event, and timing, and rules can change. Where a specific figure wasn't confirmable this pass, the text says “verify.” Confirm the current rule with the agency and, where rights are at stake, an attorney.
- Worker Adjustment and Retraining Notification (WARN) — Missouri Office of Workforce DevelopmentOfficial agency guidance. · Last verified Jul 24, 2026
- WARN Notices (annual lists) — Missouri Office of Workforce DevelopmentWhere official WARN notices are published. · Last verified Jul 24, 2026
- Worker Adjustment and Retraining Notification Act (federal) — U.S. Department of LaborOfficial agency guidance. · Last verified Jul 24, 2026
Important disclaimer
This page is educational only and is not legal advice or representation, and LayoffNext is not a law firm. Whether WARN applies, and any remedies, depend on the employer, worksite, headcount, event type, timing, and the current law, which can change. Nothing here is a conclusion that an employer did or did not comply. Verify details with the official sources above and consult a qualified attorney about your situation. See our full disclaimer.
Deepak Middha is the founder of LayoffNext and a Chartered Accountant (ICAI, India). A U.S. immigrant with nearly 20 years of experience — and 17 years in hedge fund and private equity administration, including as Vice President of Fund Accounting at NAV Fund Administration Group and Associate Director of Private Equity and Real Estate at SS&C Technologies — he builds free, plain-language layoff tools and guides for employees, H-1B workers, and immigrant families.