Louisiana 2025 Regular Session

Louisiana House Bill HB450

Introduced
4/4/25  
Refer
4/4/25  
Refer
4/14/25  
Report Pass
4/15/25  
Engrossed
4/29/25  
Engrossed
4/29/25  
Refer
4/30/25  
Report Pass
5/14/25  
Enrolled
5/22/25  
Chaptered
5/28/25  

Caption

Provides relative to evidentiary presumptions in personal injury claims

Summary

HB 450 creates a new Louisiana Code of Evidence Article 306.1 governing personal injury claims outside the workers’ compensation system. The bill says that, in such claims, the mere fact that a person had no prior history of an illness, injury, or condition cannot by itself create a presumption that the condition was caused by the incident at issue. In practical terms, it limits the use of a plaintiff’s clean medical history as automatic proof of causation. The bill also states that its purpose is to overrule the Louisiana Supreme Court’s decision in Housley v. Cerise (1991), which had recognized a presumption of causation in certain circumstances. HB 450 applies prospectively only, meaning it does not affect causes of action that arose before the effective date. It becomes effective upon gubernatorial approval or by operation of law, with the usual fallback if vetoed and later reenacted.

Impact

HB 450 changes Louisiana evidentiary law by narrowing when courts may infer causation in personal injury litigation. It affects plaintiffs and defendants in non-workers’ compensation injury cases, especially where a claimant relies on the absence of prior symptoms or diagnoses to support causation. The bill does not alter workers’ compensation claims, and it applies only to future causes of action, leaving existing claims governed by prior law.

Sentiment

The voting history suggests the bill had meaningful support but also notable opposition. It passed the House and Senate, with the Senate final passage vote showing a clear majority in favor, while the amendment vote indicates some resistance to changes in the bill’s language or scope. Overall, the bill appears to have been viewed favorably by supporters seeking to tighten causation standards in civil injury cases, but opposed by members concerned about limiting plaintiffs’ ability to prove their claims.

Contention

The main point of contention is the bill’s elimination of the Housley presumption, which some likely viewed as an important tool for injured plaintiffs to establish causation when they had no prior medical history. Supporters, by contrast, appear to have favored requiring affirmative proof rather than allowing a lack of prior illness or injury to function as a presumption. The amendment vote in the Senate suggests disagreement over how the rule should be written or whether additional changes were needed before final passage.

Companion Bills

No companion bills found.

Similar Bills

No similar bills found.