Illinois
Cardiovascular Institue of the South to lay off 219 workers in Illinois
The Illinois Department of Commerce and Economic Opportunity published the WARN notices dated October 28, 2026; the permanent layoffs take effect December 31, 2026.
Cardiovascular Institue of the South has notified Illinois officials that it will lay off 219 workers at sites in Elmhurst, Naperville, Plainfield and Warrenville, according to four Worker Adjustment and Retraining Notification (WARN) notices published by the Illinois Department of Commerce and Economic Opportunity.
The notices break down as follows: 62 workers in Elmhurst (1100 S York St., Suite 200, Elmhurst, IL 60126); 120 workers in Naperville (10 W Martin Ave., Suite 200, Naperville, IL 60540); 4 workers in Plainfield (16519 S Route 59, Plainfield, IL 60586); 33 workers in Warrenville (4201 Winfield Rd., 4th Floor, Warrenville, IL 60555).
The notices are dated October 28, 2026 and give December 31, 2026 as the date the permanent layoffs take effect.
The state’s record lists the cause as “Lost Contract.”
We have recorded 14 layoffs in Illinois so far in 2026.
Not yet known: exactly which roles are affected. Our sources do not say. If you know more, send us a tip.
Sources
How we verified this
Checked against the Illinois Department of Commerce and Economic Opportunity WARN notice on November 6, 2026: it names Cardiovascular Institue of the South and gives the figure we report (“62 + 120 + 4 + 33 across four WARN notices”). How we work.
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