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Maintenance of the CompFile system is scheduled for Friday, October 31, 2025, beginning at 8:00 AM.  The update will take approximately 5 hours.  A notification will be posted once the system is back online

Assessments and self-insurance fees can now be paid electronically. Click here for instructions. 

Illinois Workers' Occupational Diseases Act

The Illinois Workers' Occupational Diseases Act is available here as a Word document or as a pdf document.

Although every effort was made to reproduce the Act accurately in the Word documents, the General Assembly version is the official version.

To view the Act on the General Assembly website, click here.

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Contact Information

Chicago: 312-814-6500

Springfield: 217-785-7087

Collinsville: 618-346-3484

Peoria: 312-814-6500

Rockford: 312-814-6500 If you intend to visit our Peoria or Rockford office, please call first to make sure the office is open.

TDD/TTY Support Line: 866-383-4370

Support: wcc.compfile@illinois.gov

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