Quick Answer
Guide to covered injuries under Illinois workers' compensation including work-related accidents, occupational diseases, repetitive trauma, and scope of coverage.
Illinois workers' compensation broadly covers work-related injuries and occupational diseases. Understanding what qualifies ensures you know when to file a claim.
General Coverage Rule
820 ILCS 305/2: Injury arising out of and in the course of employment
Both required: Must satisfy both elements
Liberal construction: Interpreted broadly in favor of coverage
Types of Covered Injuries
Work accidents: Specific incidents with identifiable date/time
Repetitive trauma: Carpal tunnel, tendonitis from repeated activities
Occupational diseases: Diseases from workplace exposure
Aggravation of pre-existing: Work worsens prior condition
Psychological injuries: Limited coverage, usually requires physical injury
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Last updated: January 5, 2026
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