Comparative negligence rules in Oregon

Getting hit by another driver rarely produces a clean story where one person did everything wrong and the other did everything right. Insurers know this, and in Oregon they use it. If the other side can pin part of the blame on you, your payout shrinks. How much it shrinks, and whether you can collect at all, comes down to one section of the Oregon Revised Statutes and a handful of rules built around it.

Oregon uses a modified comparative negligence system. You can be partly at fault and still recover money, but only up to a point.

The rule: recover unless your fault is greater than everyone else's combined

Under ORS 31.600, your own negligence does not bar your claim as long as the fault assigned to you "was not greater than the combined fault" of everyone you are seeking recovery from.¹ Read that carefully. The comparison is against the combined fault of all the parties you sue, not any single driver.

In a plain two-car crash, that works out to a 51% bar. If a jury finds you 50% responsible, you still recover. At 51%, you get nothing.¹ Below that line, your award drops by your share. ORS 31.600 says damages "shall be diminished in the proportion to the percentage of fault attributable to the claimant."¹ A $100,000 award with 30% of the blame on you becomes $70,000. The same award at 51% becomes zero.

That single-point cliff is why fault fights in Oregon are rarely about whether you were careless. They are about exactly how careless.

Whose fault counts in the comparison

Here Oregon differs from what many people assume. The jury does not only weigh you against the driver sitting across the courtroom. Under ORS 31.600(2), the trier of fact compares your fault against the defendants, any third party defendants who are liable to you in tort, and anyone you have already settled with.¹ A defendant can point at an absent, already-paid party to shift more of the total onto that party, which makes your slice smaller relative to any one defendant.

There are limits. Fault is not assigned to people who are immune from liability, who are outside the court's jurisdiction, or whose claim is already barred by the statute of limitations or repose.¹ And when a defendant tries to blame a settled or third party, ORS 31.600(3) puts the burden on that defendant to prove both the fault and that it was a contributing cause of the injury.¹

How the percentages get set

Oregon does not let a jury hand back a lump sum and stop there. ORS 31.605 requires a special verdict. The jury states the total damages "assuming that party not to be at fault," then assigns "the degree of fault of each person" as a percentage of the total.² Those percentages have to add up to 100.

One detail matters if you settled with one defendant before trial. The jury is told the legal effect of the fault percentages, but it is not told about any settlement you reached.² The math on how a settlement interacts with the verdict happens afterward, out of the jury's view.

Each defendant pays only their share

When more than one party is at fault, Oregon does not make each of them responsible for the whole judgment. ORS 31.610 says liability is "several only and shall not be joint."³ The court multiplies the total damages by each defendant's fault percentage, and that figure is what each one owes. A defendant found 20% at fault pays 20%, not the entire bill because they happen to carry insurance and the others do not.

There is a narrow safety valve. If part of a judgment turns out to be uncollectible, you can move to reallocate the unpaid share among the remaining parties. But ORS 31.610 blocks reallocation onto a defendant whose fault is 25% or less, and onto any defendant whose share is not greater than your own fault.³ For a badly injured plaintiff facing one uninsured driver and one minor-fault defendant, that cap can leave real money uncollected.

Two old defenses Oregon threw out

Oregon has already closed two doors that defendants in other states still use. ORS 31.620 abolishes the doctrine of last clear chance and the doctrine of implied assumption of the risk.⁴ You cannot be denied recovery simply because you arguably had a final chance to avoid the crash, and a defendant cannot argue that you silently accepted a known risk as a complete bar to your claim. Conduct that once fell under "assumption of risk" now gets folded into the ordinary comparative fault percentage instead of wiping out the case.⁴

The seat belt rule has its own cap

If you were not wearing a seat belt, expect the other side to raise it. Oregon lets them, but on a short leash. Under ORS 31.760, evidence that you did not use a safety belt or harness "may be admitted only to mitigate" your damages, and that reduction "shall not exceed five percent."⁵ So going unbelted costs you at most 5% of the award on that basis alone. The 5% ceiling falls away in product liability cases and where the failure to buckle up was a substantial contributing cause of the crash itself.⁵

Deadlines that end the fight before it starts

None of this matters if you miss the clock. Oregon gives you two years from the date of the crash to file a personal injury lawsuit under ORS 12.110(1).⁶ Claims for damage to your vehicle and other personal property run longer, six years under ORS 12.080(4).⁷ Miss the injury deadline and the strongest liability facts in the world will not save the claim. A time-barred party is also one whose fault the jury never gets to weigh.¹ If you are still gathering the basics, the official crash report is where the initial fault narrative starts; see the Oregon crash report guide. For the separate question of your car's lost resale value, the Oregon diminished value guide covers that.

Why the percentage matters more in Oregon than it used to

There is no damages ceiling waiting behind the fault math in an ordinary injury case. Oregon's statutory $500,000 cap on noneconomic damages, ORS 31.710, was held unconstitutional as applied to a common-law negligence claim in Busch v. McInnis Waste Systems, Inc., 366 Or 628, 468 P3d 419 (2020), where the court found the cap violated the remedy clause of Article I, section 10 of the Oregon Constitution.⁸⁹ With no cap trimming the top off a large verdict, the comparative fault percentage becomes the main lever the defense has to cut what you collect. A few points of fault on a seven-figure award is real money.

The underlying insurance numbers are worth knowing for the same reason. Oregon requires only 25/50/20 in liability coverage, meaning $25,000 per person and $50,000 per crash for injuries plus $20,000 for property damage, under ORS 806.070.¹⁰ If your reduced award exceeds the at-fault driver's limits, your own underinsured motorist coverage is often what fills the gap.

If your crash involved shared blame, a lawyer who tries these cases can argue the percentage, and a single point can be the difference between a full recovery and nothing. You can start with the legal directory.

This is general information about Oregon law, not legal advice about your specific situation.

Sources

1. ORS 31.600, Contributory negligence not bar to recovery; comparative negligence standard; third party complaints. https://oregon.public.law/statutes/ors_31.600

2. ORS 31.605, When comparative negligence standard applies; special questions to trier of fact; jury not informed of settlement. https://oregon.public.law/statutes/ors_31.605

3. ORS 31.610, Liability of defendants several only; determination of shares; reallocation of uncollectible shares. https://oregon.public.law/statutes/ors_31.610

4. ORS 31.620, Last clear chance and implied assumption of the risk doctrines abolished. https://oregon.public.law/statutes/ors_31.620

5. ORS 31.760, Failure to use safety belt or harness as mitigating factor in damages. https://oregon.public.law/statutes/ors_31.760

6. ORS 12.110, Actions for certain injuries to the person not arising on contract; two-year limit. https://oregon.public.law/statutes/ors_12.110

7. ORS 12.080, Action for injury to personal property; six-year limit. https://oregon.public.law/statutes/ors_12.080

8. Busch v. McInnis Waste Systems, Inc., 366 Or 628, 468 P3d 419 (2020), Oregon Supreme Court. https://law.justia.com/cases/oregon/supreme-court/2020/s066098.html

9. ORS 31.710, Limitation on noneconomic damages ($500,000 cap). https://oregon.public.law/statutes/ors_31.710

10. ORS 806.070, Amounts required to satisfy financial responsibility requirements (minimum liability limits). https://oregon.public.law/statutes/ors_806.070