Louisiana’s New Causation Rule and What It Means for Injured Drivers
Key Takeaways: Louisiana Code of Evidence Article 306.1, effective May 28, 2025, eliminates the longstanding Housley presumption for most personal injury claims, meaning a clean prior medical history no longer creates an inference that a crash caused your injury. The article applies prospectively to claims arising after that date. New Orleans crash victims must now affirmatively prove medical causation through treatment records, imaging, and physician testimony, though evidence of good prior health remains admissible. The rule excludes Louisiana Workers’ Compensation claims. Causation disputes interact with Louisiana’s comparative fault system under Civil Code Article 2323, where partial fault generally reduces rather than bars recovery. Delictual actions arising on or after July 1, 2024 face a two-year prescriptive period, while earlier claims fall under the one-year rule. Prompt treatment, consistent documentation, and early evidence preservation are essential under this tougher standard.
If you were hurt in a New Orleans crash, you can no longer rely on a clean medical history alone to prove the wreck caused your injury. Under La. Code of Evidence Art. 306.1, the absence of prior treatment no longer creates a presumption that the collision caused your condition. The statute states that "in a claim for personal injury damages that is not raised pursuant to the Louisiana Workers’ Compensation Law, the lack of a prior history of an illness, injury, or condition shall not create a presumption that an illness, injury, or condition was caused by the act that is the subject of the claim." This shifts real work onto crash victims, who must now affirmatively prove medical causation with records, imaging, and physician testimony.
If you are recovering from a wreck in Orleans, Jefferson, or St. Tammany Parish and your injury claim is being questioned, the team at Smiley Law Firm is ready to listen. Call (504) 822-2222 or schedule a free consultation with our team to discuss your options.
What Was the Housley Presumption in Louisiana, and What Changed?
The housley presumption louisiana courts long applied allowed an injured plaintiff in good health before a crash to benefit from an inference that the crash caused symptoms appearing afterward. Drawn from Housley v. Cerise, 579 So. 2d 973 (La. 1991), the presumption required good health before the accident, symptoms appearing after and continuing thereafter, and a reasonable possibility of causation supported by medical, circumstantial, or common-knowledge evidence. A person with no prior back complaints who developed disc pain after a rear-end collision could use that inference to connect the wreck to the injury. Once applied, defense lawyers had to rebut it.
Article 306.1 changes that starting point for most personal injury claims. The article, titled "Presumption of causation of injuries," applies "notwithstanding any other provision of law." Enacted by Acts 2025, No. 18, §1, it became effective May 28, 2025. The Act applies prospectively, so cases based on accidents before May 28, 2025 may still be litigated under the Housley framework.
Does the New Rule Apply to Every Injury Claim?
No. The article contains an express carve-out. It does not reach claims raised pursuant to the Louisiana Workers’ Compensation Law, meaning the heightened causation burden applies to ordinary crash claims rather than workplace injury claims. Whether a particular claim falls inside or outside that carve-out is fact-dependent.
Why Does Medical Causation Matter So Much in a Car Crash Claim in Louisiana?
Causation is one of the four pillars of a negligence claim, alongside duty, breach, and damages, and it is often where insurers concentrate their defense. An adjuster may concede a client ran the light yet argue your herniated disc came from age, prior work, or a later event. Without a presumption, your proof of causation must be built deliberately.
Louisiana’s litigation climate helps explain the legislature’s activity. A Louisiana Law Review analysis noted that Louisianians are "nearly 100% more likely to file an automobile injury claim," and that the likelihood an auto claim involves a lawsuit is "more than triple the national average." These figures reflect a broader wave of tort reform affecting how crash victims pursue recovery.
How Does Comparative Fault Interact With Causation?
Louisiana allocates fault comparatively, so causation and fault allocation travel together. Under Louisiana Civil Code Article 2323, the percentage of fault attributable to all persons "causing or contributing to the injury, death, or loss shall be determined," regardless of whether those persons are parties, insolvent, or immune. Comparative negligence has historically reduced recoverable damages in proportion to the plaintiff’s fault rather than defeating the claim. Louisiana’s 2025 tort reform package revised this framework going forward, so whether partial fault reduces or bars recovery depends on when your cause of action arose.
The factfinder, usually a jury, decides how much each actor’s negligence contributed to the damages. That means two arguments can run simultaneously: whether the crash caused the injury, and how fault is divided. Strong medical causation evidence keeps the focus on the harm you suffered.
How Long Do You Have to File a Car Crash Claim in Louisiana?
Louisiana’s deadline to file most delictual actions is now two years, not one. Act 423 of the 2024 Regular Session, codified at La. Civ. Code art. 3493.1, provides that "delictual actions are subject to a liberative prescription of two years," commencing "from the day that injury or damage is sustained," effective July 1, 2024 and applying prospectively. Claims arising before that date remain governed by the one-year period. Some claims, such as medical malpractice, have their own timing rules.
Limited suspensions exist, and courts construe them narrowly. Article 3493.1 provides that prescription "does not run against minors or interdicts in actions involving permanent disability and brought pursuant to the Louisiana Products Liability Act," a narrow carve-out that does not apply to most crash claims. Other doctrines may apply in limited circumstances. A lawyer should confirm the deadline governing your claim.
| Issue | Rule Under Current Law | Practical Takeaway |
|---|---|---|
| Presumption from clean medical history | Eliminated for most PI claims by La. C.E. Art. 306.1 (prospective, eff. 5/28/2025) | Build causation proof from day one |
| Deadline to sue | Two years for delictual actions arising on or after 7/1/2024 (La. C.C. art. 3493.1); one year before that | Confirm your crash date and applicable rule |
| Fault allocation | Comparative fault under La. C.C. art. 2323, as revised by 2025 reforms | Partial fault generally reduces recovery; confirm the rule for your crash date |
| Workers’ comp claims | Expressly excluded from Art. 306.1 | Different framework applies |
What Medical Causation Evidence Should Crash Victims Preserve?
The strongest crash injury proof is contemporaneous, consistent, and connected to a treating physician’s opinion. Without the presumption, gaps in treatment and vague symptom reporting give insurers room to argue alternative causes.
- Seek evaluation promptly and describe every symptom
- Keep all accident medical records, imaging, referrals, and discharge instructions
- Follow through on physical therapy and specialist referrals without long gaps
- Ask your treating physician whether the crash mechanism fits your diagnosis
- Save photos, dashcam footage, repair estimates, and the crash report
💡 Pro Tip: Tell every provider that your symptoms began after a motor vehicle collision and give the date. A physician’s chart note tying onset to the crash is more persuasive than testimony reconstructed months later.
Why Does Treating Physician Testimony Carry Weight?
A treating physician who examined you over time can explain the biomechanics, diagnostic findings, and why other causes were ruled out. Such testimony must satisfy La. C.E. art. 702. In catastrophic cases involving traumatic brain injury, spinal cord damage, or serious burns, that testimony is often paired with imaging and life care planning.
Physical evidence from the crash can reinforce the medical picture. Understanding what auto accident forensics reveals about impact forces, delta-v, and occupant movement can connect a violent collision to the injury a doctor diagnosed. Rideshare, delivery van, and 18-wheeler cases often involve telematics or electronic data that disappears without early preservation requests.
Frequently Asked Questions
1. Does Article 306.1 mean I cannot win my case without prior medical records?
No. The absence of prior treatment no longer creates a presumption in your favor, but you may still prove causation through examination findings, imaging, treatment history, and medical opinion testimony. Evidence of good prior health remains admissible.
2. Can I still recover if I was partly at fault for the wreck?
Often yes. Louisiana’s comparative fault framework has generally reduced recovery in proportion to your fault rather than barring it, but 2025 reforms changed how fault allocation affects recovery going forward. The answer depends on when your claim arose and the factfinder’s allocation.
3. What if my symptoms did not appear until weeks after the collision?
Delayed-onset injuries are common with soft tissue, disc, and concussion injuries. Document when symptoms began and seek care promptly, because treatment gaps invite causation disputes.
4. Is my deadline one year or two years?
Claims arising on or after July 1, 2024 are generally subject to the two-year period under La. Civ. Code art. 3493.1, while earlier claims fall under the one-year rule. Certain claim types have their own deadlines.
5. Does this new rule apply to a work-related crash?
Article 306.1 excludes claims raised under the Louisiana Workers’ Compensation Law. A crash on the job can involve overlapping frameworks, including a third-party liability claim to which Article 306.1 may apply, so attorney review is important.
Protecting Your Claim Under Louisiana’s Causation Burden
Louisiana law now asks crash victims to prove medical causation directly rather than rely on an inference from a clean health history. Combined with comparative fault allocation and a prescriptive period that changed in 2024, the procedural landscape for New Orleans, Metairie, and North Shore families has shifted meaningfully. Prompt treatment, complete records, and early evidence preservation are the practical answers to a tougher louisiana causation burden.
If an insurer is disputing whether your wreck caused your injuries, an experienced new orleans injury lawyer can help you understand what your claim requires. Reach out to our Louisiana personal injury attorneys at Smiley Law Firm, call (504) 822-2222, or contact us now to get started.