Texas Civil Practice & Remedies Code § 33.003 – Determination of Responsibility
Table of Contents
Statutory Text:
“The trier of fact, as to each cause of action asserted, shall determine the percentage of responsibility with respect to each person found to have caused or contributed to causing the harm, whether by negligent act or omission, by any defective or unreasonably dangerous product, by other conduct or activity that violates an applicable legal standard, or by any combination of these.”
What Is Texas’s Fault Apportionment Law?
Section 33.003 directs the jury or court to determine what percentage of fault each responsible party bears for causing harm in a civil case. This includes:
Plaintiffs
Defendants
Third parties
Even people or entities who are not parties to the lawsuit
The result determines how damages are distributed or reduced under Texas’s modified comparative fault system.
What Does “Percentage of Responsibility” Mean?
The law requires assigning a numerical percentage of fault (totaling 100%) to all responsible persons or entities. This percentage directly impacts:
How much a defendant must pay
Whether a plaintiff can recover damages at all (per § 33.001’s 51% bar)
Example Scenario
In a three-car collision:
Driver A is found 50% at fault
Driver B is found 30% at fault
Driver C (the plaintiff) is found 20% at fault
Under § 33.003, the jury assigns these percentages. Then under § 33.001, Driver C (the plaintiff) can recover damages reduced by 20%, since they are under the 51% threshold.
How Texas Courts Use § 33.003 in Practice
- Applies to personal injury, wrongful death, medical malpractice, and negligence-based claims
- Tolling is automatic when proven, but the burden is on the plaintiff to establish their disability existed at the time the cause of action accrued
- Does not apply to business entities or to parents filing on behalf of minors (only to the minor’s own right to sue)
When Is § 33.003 Used?
This statute is commonly applied in:
Personal injury lawsuits (e.g., car accidents, premises liability)
Product liability and defective product claims
Medical malpractice or multi-party tort cases
Construction or commercial accident disputes
Related Statutes
§ 33.013 – Several Liability
§ 33.015 – Contribution Among Tortfeasors
Texas Case Law Interpreting § 33.003
Court ruled that even settling parties and non-parties must be included in the jury’s apportionment under § 33.003 if they contributed to the harm.
Texas Supreme Court emphasized that juries must consider all persons who caused or contributed to the injury—not just named defendants.
Frequently Asked Questions About § 33.003

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Yes. Juries may assign fault to any person who contributed to the harm, including those not in court.
Their percentage of fault reduces their compensation. If they are over 50% at fault, they recover nothing under § 33.001.
Yes. Defendants are typically liable only for the percentage of damages equal to their share of fault (see § 33.013).
Yes. Responsibility can be assigned to natural persons, businesses, manufacturers, or entities.