Employers in Missouri submitted 3 WARN Act notices in September 2025, putting at risk an estimated 318 workers — up substantially from August and down 60% versus September 2024. The average filing covered 106 workers, with 2 closures among the notices.
| Industry | Notices | Workers |
|---|---|---|
| Transportation | 2 | 195 |
| Professional Services | 1 | 123 |
The Transportation sector emerged as the hardest-hit sector with 195 workers across 2 notices. Separately, Professional Services reported 123 workers.
| County | Notices | Workers |
|---|---|---|
| Jackson | 1 | 123 |
| Platte | 1 | 118 |
| St. Louis | 1 | 77 |
Jackson felt the sharpest impact, accounting for 39% of all affected workers with 123 workers across 1 notices.
| City | Notices | Workers |
|---|---|---|
| Kansas City | 1 | 123 |
| Fenton, Riverside | 1 | 118 |
| Hazelwood | 1 | 77 |
| Type | Notices | Workers |
|---|---|---|
| Closure | 2 | 241 |
The high proportion of closures (76% of affected workers) suggests structural shifts rather than temporary cutbacks in Missouri's labor market.
| Company | City | Workers | Type | Date |
|---|---|---|---|---|
| United BioSource LLC | Kansas City | 123 | Closure | 2025-09-26 |
| Larken Logistics, LLC | Fenton, Riverside | 118 | Closure | 2025-09-02 |
| Chase Smiles Logistics | Hazelwood | 77 | 2025-09-29 |
Topping the list was United BioSource LLC at its Kansas City facility, reporting 123 affected workers. Larken Logistics, LLC followed with 118 workers.
After a dip last month, layoff activity has ticked back up.
These figures highlight a mixed picture for Missouri's labor market, with activity diverging between monthly and annual comparisons. The Transportation sector warrants close attention heading into the next period.
This analysis is based on official WARN Act filings reported by Missouri. The Worker Adjustment and Retraining Notification (WARN) Act requires employers with 100+ employees to provide 60-day advance notice of mass layoffs and plant closings. Data is updated daily by WARN Firehose. View all Missouri WARN notices, browse layoffs by state, or download the full dataset.
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