Comparative Fault After a Washington Vehicle Crash
Washington follows pure comparative fault. A person who contributed to a crash can still recover damages, but the award is reduced by that person's percentage of fault. When several drivers, vehicle owners, employers, public entities or other actors contributed to the same loss, Washington also has detailed rules determining whose fault is placed on the verdict form and how the resulting judgment is divided.
Washington uses pure comparative fault
RCW 4.22.005 provides that contributory fault reduces a claimant's compensatory damages in proportion to the claimant's share of fault, but does not bar recovery.
10%
The claimant ordinarily may recover 90% of compensatory damages, subject to allocation among responsible defendants.
50%
The claimant ordinarily may recover 50% of compensatory damages.
90%
The claimant can still recover the remaining 10% attributable to other responsible entities.
Comparative fault changes the recoverable amount, not the value of the injury itself
Suppose a jury determines that a crash caused $200,000 in compensatory damages.
| Finding | Percentage | Result |
|---|---|---|
| Total damages | 100% | $200,000 |
| Claimant's fault | 25% | $50,000 reduction |
| Other at-fault entities | 75% | $150,000 attributable to others |
Washington defines “fault” broadly
RCW 4.22.015 defines fault to include acts or omissions that are negligent or reckless, along with several other forms of legally recognized responsibility.
The statutory definition includes:
- negligent acts or omissions;
- reckless acts or omissions;
- strict tort liability;
- product-liability fault;
- breach of warranty;
- unreasonable assumption of risk;
- unreasonable failure to avoid an injury; and
- unreasonable failure to mitigate damages.
1. the nature of each actor's conduct; and
2. how strongly that conduct causally contributed to the damages.
A traffic violation does not automatically establish the final fault percentage
Evidence that a driver violated a traffic-safety rule can be important, but comparative-fault allocation requires a broader causal analysis.
Examples of crash conduct that may become relevant include:
- speed;
- following too closely;
- failure to yield;
- unsafe lane movement;
- red-light or stop-sign violations;
- impaired driving;
- distracted driving;
- unsafe passing;
- improper turning;
- failure to maintain lookout; and
- failure to react reasonably to a developing hazard.
Washington can allocate fault among many responsible entities
RCW 4.22.070 requires the trier of fact in an action involving the fault of more than one entity to allocate percentages totaling 100% among the entities whose fault caused the claimant's damages, subject to statutory exceptions.
Depending on the evidence, an automobile case might involve:
- the claimant;
- another driver;
- a second negligent driver;
- the vehicle owner;
- an employer;
- a commercial motor carrier;
- a government road authority;
- a vehicle or component manufacturer;
- a repair facility;
- a previously released party; or
- another legally responsible nonparty.
Several liability is Washington's general rule
RCW 4.22.070 changed Washington's older broad system of joint and several liability.
Example:
| Entity | Fault | Share of $500,000 damages |
|---|---|---|
| Claimant | 20% | $100,000 reduction |
| Driver A | 50% | $250,000 |
| Driver B | 30% | $150,000 |
Because the claimant in this example bears some fault, the ordinary several-liability rule generally means Driver A and Driver B are responsible for their own respective shares rather than each being automatically liable for the other's share.
Washington preserves important exceptions to several-only liability
RCW 4.22.070 identifies circumstances in which responsibility can extend beyond a defendant's individual percentage.
One party responsible for another
A party can be responsible for another person's fault when they acted in concert or when the other person acted as the party's agent or servant.
Joint and several liability
When the claimant is found to have zero fault, defendants against whom judgment is entered are jointly and severally liable for the sum of their proportionate shares.
Washington Supreme Court authority applying RCW 4.22.070 and discussing the statute's several-liability system and fault-free claimant exception.
Employer responsibility can operate differently from independent fault allocation
RCW 4.22.070 expressly preserves responsibility where one person acted as an agent or servant of another.
Thus, when an employee negligently causes a crash within the scope of employment, respondeat superior can make the employer responsible for the employee's tort even though the employer was not physically driving.
A separate negligent-hiring, retention, supervision or entrustment claim presents a different direct-liability theory, as discussed in Guide 14.
Fault can sometimes be allocated to someone who is not a defendant
RCW 4.22.070 expressly includes several categories of entities in the allocation process even though judgment may not be entered against them.
Those can include:
- released entities;
- entities with an individual defense against the claimant;
- other immune entities, subject to the Title 51 exception; and
- qualifying nonparties whose fault caused the damages.
Washington Civil Rule 12(i) requires a defendant or third-party defendant intending to claim that a nonparty is at fault for RCW 4.22.070 purposes to plead nonparty fault as an affirmative defense and identify the nonparty if known.
Washington excludes Title 51 immune employers from the fault allocation
RCW 4.22.070 contains an explicit exception for entities immune from liability to the claimant under Washington's workers' compensation system.
This distinction matters when an employee is injured in a work-related vehicle crash and brings a third-party action against another driver, contractor, product manufacturer or other outside tortfeasor.
Failure to wear a seat belt is not comparative negligence in Washington
Washington requires qualifying motorists and passengers to use safety belts, but the Legislature expressly controls the civil consequence of nonuse.
Washington likewise provides special protection concerning child restraints.
Failure to mitigate is different from fault for causing the crash
RCW 4.22.015 includes an unreasonable failure to avoid injury or mitigate damages within its broad definition of fault.
But the defense still must establish a legally sufficient causal connection between the allegedly unreasonable conduct and the particular damages it seeks to reduce.
Medical treatment, rehabilitation, follow-up care and other mitigation questions are therefore different from deciding which driver caused the crash.
Assumption of risk does not always operate as a complete bar
RCW 4.22.015 expressly includes unreasonable assumption of risk within comparative fault.
Washington case law distinguishes different forms of assumption of risk. Some forms are incorporated into comparative-fault principles and reduce damages rather than eliminate the claim, while express or implied-primary assumption of risk can operate differently because it concerns the existence or scope of the defendant's duty.
Intentional wrongdoing is not simply another percentage of statutory “fault”
Washington's comparative-fault statute defines fault through negligent, reckless, strict-liability and related concepts. Intentional torts occupy a different legal category.
Holds that damages caused by intentional acts must be separated from damages attributable to entities whose conduct constitutes statutory fault under RCW 4.22.070.
Settling with one responsible party can affect later fault allocation
Washington permits fault to be allocated to entities previously released by the claimant.
That means settlement with one driver does not necessarily make that driver's causal responsibility disappear from the eventual allocation.
Explains Washington's post-tort-reform several-liability system and the interaction between settlements, contribution and proportionate fault.
RCW 4.22.060 separately governs specified settlement agreements, contribution consequences and judicial reasonableness procedures.
Washington limits when one family member's fault can be imputed to another
RCW 4.22.020 generally provides that the contributory fault of one spouse or domestic partner is not imputed to the other spouse, partner or qualifying minor child merely because of that relationship.
But the statute provides a different rule for derivative claims.
Guide 20 addresses Washington wrongful-death law in greater detail.
A comparative-fault defense should identify actual conduct, not use labels
Adjusters sometimes assign preliminary percentages very early in a claim. Those numbers are negotiation positions, not judicial findings.
When another party alleges comparative negligence, identify:
- the exact act or omission being attributed to the claimant;
- the traffic or common-law duty allegedly violated;
- the evidence supporting that allegation;
- how the conduct supposedly contributed to the collision;
- how it supposedly contributed to particular injuries or damages; and
- which other entities are also claimed to be at fault.
Comparative fault makes crash-scene evidence especially important
| Evidence | Fault issue it may address |
|---|---|
| Vehicle positions and damage | Impact direction, lane position and collision sequence |
| Dashcam / surveillance video | Signals, right of way, speed and timing |
| EDR / telematics | Speed, braking, throttle and crash timing |
| Phone records | Potential distraction or application use |
| Witness statements | Traffic movement and driver conduct |
| Signal timing | Intersection right-of-way disputes |
| Roadway evidence | Visibility, maintenance, construction or dangerous-condition issues |
| Commercial records | Hours, dispatch, vehicle condition and employer involvement |
Citizen workflow for a Washington comparative-fault dispute
Bottom line
Washington follows pure comparative fault. A claimant's negligence reduces recovery in proportion to the claimant's responsibility but does not automatically bar the claim at any percentage below 100%. In a multi-party crash, the more difficult question is often not whether comparative fault exists but who belongs in the allocation and who must pay the resulting judgment. Washington generally imposes several liability, while preserving important exceptions for agency, parties acting in concert and fault-free claimants. Nonparty fault can reduce the amount collectible from defendants and therefore must be investigated early. Workers' compensation immune employers are expressly excluded from the Title 4.22 allocation. Finally, Washington has rejected an ordinary seat-belt comparative-negligence defense by statute. Build the allocation from evidence and causation—not from an adjuster's unsupported percentage.