WARN Act filings affecting workers in King of Prussia, Pennsylvania.
Last updated: Apr 23, 2026 · Showing last 24 months
King of Prussia, PA has recorded 2 WARN filings affecting 700 workers over the past 24 months. The largest filer is Vifor Pharma, with 55 workers affected. Of these, 1 involved facility closures and 1 were layoff events. Filing dates range from Jun 28, 2024 through Dec 1, 2025. King of Prussia represents 3% of Pennsylvania workers affected by WARN filings in this period.
If your employer filed a WARN notice affecting workers in King of Prussia, you are entitled to 60 days advance written notice before your last day. During the notice period, you remain employed with regular pay and benefits. If your employer gave less than 60 days notice, you may be entitled to back pay and benefits for each day of the shortfall. After your last day, file for unemployment insurance with your state workforce agency as soon as possible. Review your COBRA options to continue health coverage for up to 18 months. Visit your local America's Job Center for free career counseling, resume help, and retraining vouchers.
Apply online at your state workforce agency. You may be eligible before your last day.
Continue your employer health plan for up to 18 months, or compare lower-cost options on the Health Insurance Marketplace.
Employers with 100 or more employees must give 60 days written notice before mass layoffs or plant closings.
Free career counseling, resume help, job search assistance, and retraining programs through CareerOneStop.
Interview prep, job search management, and career planning tools to help you land your next role.
We don't have a job center listed for King of Prussia specifically, but you can find nearby centers on the Pennsylvania page.
All data on this site is sourced from official WARN Act filings published by state workforce agencies. Filings are updated regularly but may not reflect same-day submissions. Coverage varies by state.
| Company | Type | Workers | Effective | Filed |
|---|---|---|---|---|
| Vifor Pharma 1000 First Avenue, Suite 300, King of Prussia, PA 19406 |
Layoff | 55 | 2025-12-01 | 2025-12-01 |
| Radial 935 First Avenue , King of Prussia, PA 19406 |
Closure | 645 | 2024-06-28 | 2024-06-28 |
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