Missouri Injury Law · Comparing Frameworks
Comparative Negligence in Missouri Personal Injury Cases
Comparative negligence is the framework Missouri uses to handle accidents where more than one party shares fault. This page explains the concept, how it affects recovery, and how Missouri's approach compares to other jurisdictions' rules.
The short answer
What is comparative negligence, and how does Missouri’s version compare?
Direct answer: Comparative negligence assigns each party a percentage of fault and reduces an injured person’s recovery by their share. Missouri uses a pure comparative negligence model — an injured person may recover even if mostly at fault, with recovery reduced proportionally. This differs from modified systems (which bar recovery above 50% or 51% fault) and from contributory negligence (which can bar recovery entirely with even slight fault). The same facts can yield very different outcomes depending on the rule.
Related resources
Key terms
Terms, in plain English.
Plain-English definition
Comparative negligence
A framework that divides fault by percentage and reduces recovery accordingly; the term is used interchangeably with comparative fault.
Plain-English definition
Pure comparative negligence
Missouri’s model, allowing recovery at any fault level with a proportional reduction.
Plain-English definition
Modified comparative negligence
A system used by many states that bars recovery once the injured person’s fault exceeds a set threshold (often 50% or 51%).
Plain-English definition
Contributory negligence
A strict framework, used in a few jurisdictions, that can bar recovery entirely when the injured person is even slightly at fault.
The concept
Dividing fault by percentage.
Comparative negligence replaces the old all-or-nothing approach to fault. Instead of asking whether the injured person was “any” at fault — and barring them if so — it asks how much fault each party bears, assigns percentages, and adjusts recovery accordingly. The framework recognizes that real accidents often have multiple contributing causes.
The percentages come from the evidence: witness accounts, physical damage, vehicle data, the police report, and reconstruction. In a negotiated claim the parties argue over the numbers; in a lawsuit a judge or jury assigns them. The framework is the same — only the decision-maker differs.
Missouri’s model
Pure comparative negligence.
Missouri follows pure comparative negligence. The defining feature is that an injured person is not barred from recovery no matter how much fault they bear — their recovery is simply reduced by their percentage. A person 30% at fault recovers 70% of their damages; a person 70% at fault recovers 30%.
In practice, very high fault allocations make a claim difficult to pursue, because the recovered portion may not justify the cost and effort. But the framework itself never closes the door. This is more forgiving than the alternatives described next.
Comparing frameworks
How other jurisdictions differ.
- Modified comparative negligence: Bars recovery once the injured person’s fault exceeds a threshold — commonly 50% or 51%. Used by many states.
- Contributory negligence: Can bar recovery entirely when the injured person is even slightly at fault. Used in only a few jurisdictions.
- Pure comparative negligence: Missouri’s approach — recovery at any fault level, reduced proportionally.
Why it matters
The same facts, different outcomes.
The framework that applies can change an outcome dramatically. Consider a hypothetical injured person found 40% at fault with $100,000 in damages. Under Missouri’s pure comparative approach, they recover $60,000. Under a contributory negligence rule, they might recover nothing.
This is why knowing which framework applies — and where a claim would be pursued — is essential to understanding what a claim may be worth. For accidents in Missouri, the pure comparative negligence model applies; for accidents elsewhere, a different rule may govern. The details should be confirmed for any specific situation.
Frequently asked questions
Common questions, answered directly.
General information only, not legal advice for any particular situation.
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