Updated October 2026
Illinois Business Insurance Requirements 2026: Complete Legal Guide
Every Illinois business must meet specific insurance requirements. Here is a complete guide to what is legally required — workers comp thresholds, auto minimums, contractor bonds, and non-compliance penalties.
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Illinois Business Insurance Requirements at a Glance
Workers' Comp Threshold
Mandatory at 1 or more employees
Commercial Auto Minimums
$25,000/$50,000/$20,000 (25/50/20)
Contractor Bonds
Chicago requires $1,000 surety bond for contractor permits; plumbing and electrical require state li…
Regulator
Illinois Department of Insurance (IDOI)
Workers' Compensation in Illinois
Illinois requires WC for all businesses with one or more employees, including part-time and seasonal workers.
Regulated by: Illinois Department of Insurance (IDOI)
Non-Compliance Penalties
WC non-compliance: misdemeanor, fines up to $500/day, personal liability, potential criminal charges for willful violations
Contractor Licensing & Bond Requirements
Chicago requires $1,000 surety bond for contractor permits; plumbing and electrical require state licensing through IDFPR
State Insurance Regulator
Illinois Department of Insurance (IDOI)
https://insurance.illinois.gov
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