What Is Comparative Negligence?
Comparative negligence is a legal rule that may reduce an injured person’s compensation when more than one party contributed to an accident. A court, jury, or insurance company may assign each party a percentage of fault based on the evidence.
The plaintiff’s percentage of responsibility can directly affect the damages available. However, the result depends on whether the jurisdiction follows pure comparative negligence, modified comparative negligence, or another fault rule.
How Comparative Negligence Works
Comparative negligence is a principle used in tort law, including many personal injury and property damage claims. The rule applies when the defendant argues that the plaintiff’s own conduct contributed to the injury.
In a typical case, the factfinder determines:
- Whether each party acted negligently
- Whether that conduct contributed to the accident
- The percentage of fault assigned to each party
- The plaintiff’s total damages
- Whether state law permits recovery at that level of fault
The plaintiff’s compensation is then reduced according to the assigned percentage of responsibility.
For example, if a plaintiff suffers $100,000 in damages but is found 25% at fault, the recoverable amount may be reduced by 25%, leaving $75,000. Whether the plaintiff can recover at all depends on the rule used in that jurisdiction.
The Main Types of Comparative Fault Rules
States do not all follow the same system. The three main approaches are pure comparative negligence, modified comparative negligence, and the slight/gross rule.
Pure Comparative Negligence
Under a pure comparative negligence system, a plaintiff may recover damages even when the plaintiff bears most of the responsibility for the accident. The award is reduced according to the plaintiff’s percentage of fault.
A plaintiff found 80% responsible for $100,000 in damages may still recover the remaining 20%, or $20,000. California, Florida, and New York are examples of jurisdictions that use the pure approach.
Because fault remains important even under this rule, evidence such as photographs, witness statements, reports, and medical records may influence the final percentage assigned.
A person dealing with vehicle damage may also find Her Lawyer’s guide on what happens when a car is totaled useful when evaluating insurance and property-loss issues after a collision.
Modified Comparative Negligence
Modified comparative negligence allows a plaintiff to recover only when the plaintiff’s fault remains below a specified threshold.
States generally use one of two versions:
- 50% bar rule: A plaintiff cannot recover when the plaintiff is 50% or more at fault.
- 51% bar rule: A plaintiff cannot recover when the plaintiff is more than 50% at fault.
The distinction matters when fault is evenly divided. Under a 50% bar rule, a plaintiff found exactly 50% responsible generally cannot recover. Under a 51% bar rule, a plaintiff found exactly 50% responsible may still recover half of the proven damages.
When the plaintiff remains below the applicable threshold, the court still reduces the damages according to the plaintiff’s share of fault.
Slight/Gross Comparative Negligence
South Dakota uses a less common approach sometimes called the slight/gross comparative negligence rule. Under this system, a plaintiff may recover only when the plaintiff’s negligence is slight compared with the defendant’s negligence.
The court still reduces the damages according to the plaintiff’s contribution. However, the analysis does not rely solely on a fixed 50% or 51% threshold.
“Slight” and “gross” describe how the parties’ conduct compares with each other in the particular case. They should not automatically be treated as exact percentages or as proof that one party acted intentionally.
An Example of Comparative Negligence
Consider a collision in which a driver changes lanes without checking the blind spot. Another driver is traveling above the speed limit and cannot stop in time.
The injured driver proves $50,000 in damages, but the jury finds that driver 30% responsible for the collision. The other driver receives 70% of the fault.
Under pure comparative negligence, the injured driver’s award would be reduced by 30%, resulting in $35,000.
The result would generally be the same under a modified system because the plaintiff’s 30% share is below either common threshold. However, if the plaintiff were found 51% responsible, recovery could be barred under both common modified systems while remaining partially available under a pure system.
This simplified example shows why the jurisdiction’s rule matters. The same evidence and fault percentage can produce different outcomes in different states.
How Fault Is Determined
Comparative fault may be evaluated during an insurance claim, settlement negotiations, or litigation. Insurance companies may assign fault when reviewing a claim, but their assessment does not necessarily control what a court or jury would decide.
Evidence may include:
- Police or incident reports
- Photographs and video footage
- Witness statements
- Vehicle damage
- Medical records
- Expert opinions
- Traffic laws or safety rules
- Statements made by the parties
The analysis focuses on whether each party failed to use reasonable care and whether that failure contributed to the injury.
Insurance Claims and Settlement Negotiations
An insurance adjuster may investigate the accident and assign a percentage of fault before making a settlement offer. The adjuster may review statements, photographs, reports, and other documentation.
A disputed fault assessment can affect the amount offered. Settlement negotiations may involve disagreements about liability, medical costs, lost income, property damage, and the extent of the injuries.
Accepting an insurance settlement usually ends the claim against the released parties. A claimant should understand the fault allocation and the scope of the release before resolving the matter.
Comparative Negligence in Court
When the parties cannot resolve the dispute, a judge or jury may determine fault during a civil case. The court applies the comparative negligence rule recognized in that jurisdiction.
The factfinder typically decides the total damages first and then assigns percentages of fault. The court uses those findings to calculate the final award and determine whether a modified threshold prevents recovery.
FAQs About Comparative Negligence
What is comparative negligence?
Comparative negligence reduces a plaintiff’s compensation when the plaintiff’s own conduct contributed to an accident or injury. The amount and availability of recovery depend on the assigned fault and state law.
Does being partially at fault prevent recovery?
Not always. Pure comparative negligence permits recovery at almost any level of fault, while modified systems bar recovery once the plaintiff reaches the applicable threshold.
What is the difference between pure and modified comparative negligence?
Pure comparative negligence reduces damages without using a complete recovery bar based solely on percentage. Modified comparative negligence prevents recovery when the plaintiff’s fault reaches or exceeds a specified level.
Who decides each party’s percentage of fault?
Insurance companies may assign fault during claim negotiations. If the case proceeds to court, a judge or jury may make the final determination based on the evidence.
Does comparative negligence apply in every state?
No. State rules differ, and some jurisdictions still use contributory negligence or another system. The law governing the location of the accident generally controls the analysis.
Speak With a Personal Injury Attorney
Comparative negligence can significantly affect the value of a personal injury or property damage claim. Even a small difference in the assigned percentage may change the compensation available or determine whether recovery is permitted.
Her Lawyer, A Professional Law Corporation, can help explain how the applicable fault rule may affect a claim. Contact Her Lawyer to request a consultation.