What Is Comparative Fault?
Comparative fault (also called comparative negligence) is a legal doctrine that allocates responsibility between parties based on their respective contributions to an accident. Illinois uses a modified comparative fault system, codified at 735 ILCS 5/2-1116.
The 50% Bar Rule in Illinois
Under Illinois law, you can recover damages only if you are less than 50% at fault for the accident. If you’re found 50% or more responsible, you’re completely barred from recovery.
How It Works
Your recovery is reduced by your percentage of fault:
- 10% at fault: Recover 90% of damages
- 30% at fault: Recover 70% of damages
- 49% at fault: Recover 51% of damages
- 50% or more at fault: Recover nothing
Example Calculation
You suffer $100,000 in damages from a car accident. The jury finds:
- Other driver: 70% at fault (ran red light)
- You: 30% at fault (driving 5 mph over limit)
Your recovery: $100,000 × 70% = $70,000
Common Scenarios Where Fault Is Shared
Speeding Victim
Even if another driver caused the accident, your speeding may have contributed to the severity of injuries or your inability to avoid the collision. Insurance adjusters commonly reduce claims by 10-20% for speeding victims.
Distracted Driving
If evidence shows you were texting or otherwise distracted before an accident, defendants will argue you could have avoided the crash with proper attention.
Failure to Wear Seatbelt
Under the Illinois “seat belt defense” (625 ILCS 5/12-603.1), failure to wear a seatbelt can reduce your damages—but only up to 5%. This is a limited exception to standard comparative fault rules.
Lane Change Accidents
When two cars collide during lane changes, both drivers may share fault for failing to check blind spots or signal properly.
Intersection Accidents
Even when one driver runs a red light, the other driver may be assigned partial fault for:
- Entering on a stale yellow light
- Failing to look before proceeding on green
- Excessive speed through the intersection
How Fault Is Determined
By Insurance Companies
During settlement negotiations, adjusters assign fault percentages based on:
- Police accident reports
- Traffic citations issued
- Witness statements
- Physical evidence and photos
- Their own investigation
Important: Insurance company fault determinations are not binding. They often overstate your fault to reduce payouts.
By the Jury
If your case goes to trial, the jury makes the final determination of fault percentages after hearing all evidence. Under 735 ILCS 5/2-1107.1, jurors receive specific instructions on how to allocate fault.
Insurance Company Tactics
Be aware of common strategies adjusters use to inflate your fault percentage:
Recorded Statements
Adjusters may ask you to give a recorded statement shortly after the accident, hoping you’ll say something that can be used to assign you blame. You have no obligation to give recorded statements to the other driver’s insurance.
Surveillance
Insurance companies may investigate your driving history, social media, and even conduct surveillance to find evidence of negligent behavior.
Disputed Liability
Adjusters commonly claim “disputed liability” even in clear-cut cases, hoping unrepresented claimants will accept reduced settlements.
Protecting Your Claim
To minimize improper fault allocation:
At the Scene
- Don’t admit fault: Even saying “I’m sorry” can be used against you
- Document everything: Photos, witness contacts, road conditions
- Get the police report: Official documentation is valuable
After the Accident
- Limit insurance conversations: Provide only basic information
- Preserve evidence: Don’t repair your vehicle until documented
- Get medical treatment: Delays can be used to question injury severity
Multiple Defendants and Fault Allocation
When multiple parties cause an accident, Illinois law requires the jury to determine each party’s percentage of fault. Under 735 ILCS 5/2-1117, defendants are only responsible for their own percentage of fault (several liability) unless they acted in concert or certain exceptions apply.
For example, in a three-car pileup with $300,000 in damages:
- Driver A: 50% at fault → Owes $150,000
- Driver B: 30% at fault → Owes $90,000
- You: 20% at fault → Recover $240,000 total
Comparative Fault and Settlement Negotiations
Understanding comparative fault is crucial during settlement talks because:
- Insurance adjusters use it as leverage: They threaten to prove you were 50%+ at fault at trial
- It affects settlement value: Claims with potential fault issues settle for less
- It can be negotiated: Fault percentages aren’t fixed—strong evidence can shift them
Experienced attorneys know how to counter inflated fault claims with evidence and legal arguments.
When Comparative Fault Doesn’t Apply
Certain claims in Illinois are not subject to comparative fault reduction:
- Intentional torts: Assault, battery, intentional harm
- Some strict liability claims: Certain product defects
- Workers’ compensation: Employee fault doesn’t reduce benefits
Contact a Chicago Car Accident Attorney
If you’ve been partially blamed for a car accident in Illinois, don’t accept the insurance company’s fault determination without legal guidance. Even with some shared fault, you may be entitled to substantial compensation.
Contact Phillips Law Offices today for a free consultation. Our Chicago car accident lawyers will analyze your case, challenge unfair fault allocations, and fight to maximize your recovery.
]]>Authoritative Sources
Related Chicago Accident Guides
- What Evidence Do You Need for an Illinois Car Accident Claim?
- Dealing with Insurance Companies After a Chicago Car Accident: Tactics to Watch
- Intersection Accidents in Chicago: Red Light, Stop Sign & Right-of-Way Claims
FAQs
Can I recover damages if I was partly at fault in Illinois?
Yes, if your fault is below 50 percent, but recovery is reduced by your share of fault.
How is comparative fault decided?
Insurers and courts review evidence such as statements, reports, photos, and traffic-law violations.
Does a police report decide comparative fault completely?
No. It is important evidence but not the final legal determination.
