Missouri comparative negligence: what if you're partly at fault?
A claim gets built by proving how much of the wreck belongs to the other driver, not by defending your own share.
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Building a strong claim near O’Fallon, Missouri, means proving the other driver’s share of the wreck. Missouri’s rule rewards whichever side brings the better evidence to the table. A percentage isn’t handed down from anywhere official on day one, which is exactly why the evidence-gathering work matters so much.
Evidence that raises the other driver’s fault share
Traffic camera footage, a witness account, skid marks, or a citation issued at the scene can all push more of the blame onto the other driver. The stronger that evidence, the smaller your own share ends up looking by comparison. Early gathering is what keeps all of it usable.
An early adjuster number isn’t the final one
Insurers sometimes float a fault percentage before all the facts are in, often leaning toward whatever number costs their company the least. That figure is a negotiating position, not a verdict, and it can shift once more of the record comes together. Treating an early guess as settled fact is one of the more common ways a claim loses ground it never had to.
Missouri never disqualifies you over fault
Fault in Missouri decides how much, never whether. A large share knocks the number down; it doesn’t knock the claim out. That holds at any share a report might assign, slight or overwhelming. No threshold exists anywhere on that scale where the claim simply stops.
Missouri and Illinois’s O’Fallons follow different fault rules
Illinois runs a different rule for a driver’s own share of blame. Cross into more than half the fault there, and a plaintiff can’t recover anything at all. Missouri never draws that line, no matter how large a share a fault report assigns. Mixing up the two O’Fallons’ legal rules is an easy, costly mistake, especially for anyone who’s lived on both sides of the river or read advice meant for the other one.
Getting your share of the evidence together
None of this evidence organizes itself. The insurance adjuster guide discusses how the other side’s adjuster tends to approach a fault question, and a case review weighs what’s already gathered against what still remains to request.
Common questions
Can you still recover money if you're mostly to blame?
Yes, under Missouri's pure comparative rule. Your award goes down by your share of the fault, whatever that share is, but the claim itself doesn't disappear.
Who decides what percentage of fault belongs to each driver?
An adjuster proposes a number first, based on the evidence available at that point. Treat that number as an opening bid; additional evidence moves it.
Is Missouri's rule the same as the one across the river in Illinois?
No. Illinois cuts a plaintiff off entirely once their own fault crosses fifty percent. Missouri has no such cutoff, one of several differences between the two O'Fallons that share a name and little else legally.
Related pages
Do I need a lawyer
The answer changes depending on which kind of Missouri crash you actually had.
Learn more →Accident Report Guide
The report matters differently depending on who's asking for it.
Learn more →Case Value Guide
There's no flat number. Each part of a claim gets proven with its own document.
Learn more →Adjuster Guide
Two adjusters, two very different sets of rules for what you owe them.
Learn more →See if you have a case — free
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