Illinois Personal Injury Law

Illinois Comparative Negligence in Personal Injury Cases

One of the most common questions after an accident is whether an injured person can still recover compensation if they were partly at fault. In Illinois, the answer is often yes, but not always. Illinois follows a modified comparative negligence rule that can reduce damages when fault is shared and can bar recovery entirely if the plaintiff’s fault crosses the statutory threshold.

That rule matters in car crashes, truck accidents, slip and fall cases, construction cases, and other negligence claims. Insurance companies regularly raise comparative fault arguments to reduce exposure. They may claim the injured person was speeding, distracted, not watching where they were going, failed to react in time, or ignored a known hazard.

Understanding Illinois comparative negligence is important because the issue can directly affect both settlement value and the right to recover at all.

The basic Illinois rule

Under 735 ILCS 5/2-1116, a plaintiff in an action based on negligence is barred from recovering damages if the trier of fact finds that the plaintiff’s contributory fault is more than 50% of the proximate cause of the injury or damage. If the plaintiff’s fault is not more than 50%, the plaintiff is not barred, but the damages allowed are diminished in proportion to the amount of fault attributable to the plaintiff.

That is why Illinois is commonly described as a modified comparative negligence state with a 51% bar. If a plaintiff is 50% at fault, recovery is reduced but still potentially allowed. If a plaintiff is more than 50% at fault, recovery is barred.

How comparative negligence works in practice

Shared-fault car accident example

Assume a jury values damages at $100,000 and finds the plaintiff 20% at fault. Under Illinois comparative negligence, the plaintiff is not barred from recovery, but the damages would be reduced by 20%, leaving a potential recovery of $80,000.

Slip and fall example

A property owner may argue the plaintiff was not paying attention, was wearing improper footwear, or ignored an open and obvious condition. Even if those arguments do not eliminate liability, they may be used to push down the settlement value by increasing the plaintiff’s share of fault.

Barred-recovery example

If a jury finds a plaintiff more than 50% responsible for the occurrence, the plaintiff is barred from recovery under the statute. That makes fault development one of the most important parts of any negligence case.

Where comparative negligence shows up most often

Car, truck, and motorcycle accidents
Pedestrian and bicycle injury claims
Slip and fall and premises liability cases
Construction accident cases involving jobsite conduct
Rear-end and intersection collision disputes
Cases involving distraction, visibility, speed, or reaction time arguments

Comparative negligence is not a niche issue. It is one of the most common defense themes in Illinois personal injury litigation because it directly affects the amount a defendant or insurer may have to pay.

How insurers use comparative fault to reduce claims

Arguing the injured person created or worsened the hazard
Claiming the plaintiff failed to keep a proper lookout
Arguing the plaintiff ignored warnings, signals, or conditions
Using photographs, scene evidence, or statements to build a blame narrative
Leveraging comparative fault arguments to discount settlement offers
Trying to shift the focus away from the defendant’s negligence

Because of that, comparative negligence issues need to be addressed early. Evidence preservation, photographs, witness interviews, video, vehicle data, site conditions, and the medical timeline can all matter when fault is disputed.

Why this rule matters to settlement value

Comparative negligence affects more than trial outcomes. It affects negotiation leverage. Even when a defense argument is weak, insurers may still use it to justify a lower pre-suit or pre-trial offer.

A case with strong damages can still be discounted if fault development is weak. Conversely, improving the liability record can meaningfully improve settlement posture.

Related personal injury pages

Official resources

Illinois comparative negligence statute (official text)

Frequently asked questions

Can I still recover if I was partly at fault in Illinois?

Often yes. If your share of fault is not more than 50%, recovery may still be allowed, but your damages can be reduced in proportion to your fault.

What happens if I am 50% at fault?

Under Illinois’ statute, fault at 50% does not automatically bar recovery. The damages may still be reduced by that percentage.

What happens if I am more than 50% at fault?

If the trier of fact finds you more than 50% at fault, Illinois law bars recovery in the negligence action.

Who decides comparative fault?

In litigation, comparative fault is determined by the trier of fact based on the evidence. Before trial, insurers and lawyers also evaluate likely fault allocations when valuing the case.

Why do insurers raise comparative negligence so often?

Because even a partial fault argument can reduce the value of a claim, and a successful argument above the 50% threshold can bar recovery entirely.

Speak with Randolph & Holloway LLC

If comparative negligence is becoming a major issue in your case, Randolph & Holloway LLC can evaluate the liability record, the insurer’s arguments, and the next steps.

Call Randolph & Holloway LLC to discuss your Illinois personal injury claim.