When a person suffers a traumatic brain injury on someone else’s property — whether at an amusement park, a commercial gym, a sports complex, or a retail space — the legal path to fair compensation is rarely straightforward. Defense attorneys representing property owners have become increasingly sophisticated in deploying a toolkit of legal doctrines designed to shift blame, minimize damages, and reduce settlement values. Chief among these tools is the assumption of risk TBI premises liability defense, a doctrine that, when successfully argued, can dramatically reduce — or in some jurisdictions entirely eliminate — a plaintiff’s right to recovery. Premises liability TBI claims are among the most contested case types in 2026, and understanding how these defenses work, how they vary by state, and how they interact with TBI settlement values is essential knowledge for any plaintiff navigating a brain injury claim this year.
What Is the Assumption of Risk Defense in TBI Premises Liability Cases?
Assumption of risk is an affirmative defense, meaning the burden of proof falls squarely on the defendant, not the injured plaintiff. To invoke it successfully, a property owner or operator must demonstrate two core elements: first, that the plaintiff had actual or constructive knowledge of the specific risk that caused the injury; and second, that the plaintiff voluntarily chose to encounter that risk. In the context of traumatic brain injury — a category of harm that affects about 2.8 million Americans each year — this defense arises most often when the injury occurs during recreational or sporting activities where some degree of physical risk is considered inherent to the activity itself.
Courts and legal scholars in 2026 continue to distinguish between two critical variants of this doctrine. Primary assumption of risk operates as a complete bar to recovery — the defendant owes no duty of care to the plaintiff for risks that are inherent to the activity. Secondary assumption of risk arises when the defendant has breached a duty of care, but the plaintiff knowingly encountered the resulting danger; in most modern jurisdictions, this form is absorbed into comparative fault analysis rather than serving as a total bar. The distinction between these two forms has enormous consequences for TBI victims attempting to recover compensation.
Primary vs. Secondary Assumption of Risk: Why the Distinction Matters for Brain Injury Plaintiffs
For a plaintiff who sustained a TBI at a rock climbing gym or an extreme sports facility, the difference between primary and secondary assumption of risk can be the difference between receiving a settlement and receiving nothing. Under primary assumption of risk doctrine — still applied robustly in states like California for specific professional and recreational sporting contexts — defendants argue that the very act of participation constituted an acceptance of the injury-producing risk. However, it is important to note that California’s landmark decision in Li v. Yellow Cab Co. significantly reshaped how assumption of risk interacts with comparative fault principles, effectively abolishing pure primary assumption of risk in many non-professional contexts and integrating plaintiff conduct into a comparative negligence framework.
Secondary assumption of risk, by contrast, does not automatically extinguish a plaintiff’s claim. Instead, a plaintiff’s knowing encounter with a danger created by the defendant’s negligence is weighed as one factor among many in the comparative fault calculus. For TBI plaintiffs, this means that even if a jury finds they voluntarily assumed some risk, they may still recover a proportionally reduced damages award — unless they are in a jurisdiction that bars recovery entirely once fault reaches a statutory threshold. The practical stakes could not be higher: with average TBI settlements reaching approximately $540,000 as of May 2026 data compiled from three law firms, even a modest reduction in a plaintiff’s recoverable share can translate to hundreds of thousands of dollars lost.
State-by-State Rules: How Assumption of Risk Doctrines Vary and Impact TBI Cases
No area of personal injury law is more jurisdiction-dependent than the intersection of assumption of risk and premises liability. The rules governing whether a TBI plaintiff can recover — and how much — vary dramatically from state to state, making forum selection and choice-of-law arguments critical strategic considerations in 2026.
States fall broadly into three camps. The first group — including California in sporting contexts and Florida for certain recreational activities — retains meaningful primary assumption of risk doctrine, allowing defendants to argue a complete bar to recovery for injuries arising from inherent risks of a given activity. The second group has effectively merged assumption of risk into comparative fault analysis, meaning plaintiff conduct reduces but does not automatically eliminate recovery. The third group maintains modified comparative fault rules with statutory cutoff thresholds: if a plaintiff’s assigned fault share reaches or exceeds a certain percentage, recovery is barred entirely.
New York represents one of the most consequential jurisdictional shifts heading into 2026. Under New York’s 2026 insurance reforms, recovery is barred entirely once an injured claimant’s fault share exceeds the defendant’s. This departure from New York’s longstanding pure comparative fault framework has significant implications for TBI plaintiffs injured on premises in that state, particularly in cases involving recreational facilities, gyms, or entertainment venues where defendants routinely argue that plaintiff conduct contributed substantially to the injury. In such cases, even a finding that a plaintiff was 51 percent at fault will now completely extinguish the right to recovery — a result that was impossible under the prior pure comparative fault regime.
Plaintiffs’ attorneys in 2026 must account for these interstate variations not only in initial case evaluation but also when advising clients about settlement decisions. A TBI premises liability case that would yield a substantial recovery in a pure comparative fault state may produce nothing in a modified comparative fault jurisdiction if the jury apportions the plaintiff’s fault above the cutoff threshold. These strategic considerations apply with particular force given how fiercely contested premises liability TBI claims have become across all jurisdictions this year.
How Defense Attorneys Weaponize Causation Disputes in TBI Premises Liability Cases
Even in jurisdictions where assumption of risk doctrine is limited or has been absorbed into comparative fault frameworks, defense attorneys pursuing TBI premises liability cases in 2026 have developed parallel strategies centered on causation disputes. Rather than arguing solely that the plaintiff assumed the risk, sophisticated defense counsel attack the causal link between the premises condition, the alleged negligent act, and the traumatic brain injury itself.
The most common causation defense strategy targets the nature and severity of the TBI diagnosis. Defense medical experts — often neurologists, neuropsychologists, and radiologists retained specifically for litigation — challenge whether the incident on the property was physically capable of producing a traumatic brain injury of the type and severity claimed. In mild TBI cases particularly, this strategy has proven effective because the imaging findings may be subtle or absent entirely, leaving plaintiffs reliant on subjective symptom reports and neuropsychological testing that defense experts routinely attack as unreliable or attributable to non-injury factors such as depression, anxiety, or litigation-related stress.
A striking illustration of what is at stake in these cases came when a jury awarded more than $60 million to a man who suffered a mild traumatic brain injury in a train derailment at a gas station. That verdict, which turned substantially on causation and damages evidence, underscores how dramatically outcomes can diverge depending on the strength of the medical and expert presentation — and how aggressively defense teams contest even mild TBI diagnoses when the potential verdict exposure is significant.
Defense attorneys also exploit gaps in the medical record that frequently occur in TBI cases. Plaintiffs who did not seek immediate emergency care, who were initially discharged with a diagnosis of concussion rather than TBI, or who had prior head injuries are particularly vulnerable to causation attacks. Defense counsel in 2026 routinely retain biomechanical engineers to opine that the forces involved in the premises incident were insufficient to produce a traumatic brain injury, a strategy that has grown more sophisticated as biomechanical engineering testimony has become better accepted in courtrooms across the country.
Pre-Existing Conditions as a Defense Weapon
Closely related to causation attacks is the defense strategy of leveraging a plaintiff’s pre-existing conditions — whether prior head injuries, neurological diagnoses, psychiatric histories, or substance use — to argue that the TBI symptoms claimed are not attributable to the premises incident at all. This approach intersects with assumption of risk doctrine in an important way: if a plaintiff with a known prior brain injury chose to engage in a physical activity at the defendant’s premises, defense counsel may argue both that the plaintiff assumed the risk of re-injury and that the current symptoms are sequelae of the prior injury rather than the new incident.
The eggshell skull rule — which holds that a defendant takes a plaintiff as they find them, meaning pre-existing vulnerabilities do not reduce a defendant’s liability for harm actually caused — provides the primary doctrinal protection against this strategy. However, the eggshell skull rule only applies once causation is established. If the defense successfully persuades a jury that the premises incident did not cause or materially aggravate the plaintiff’s neurological condition, the eggshell skull rule provides no protection. In 2026, defense teams have become adept at using a plaintiff’s medical history not to invoke assumption of risk directly but to undermine the causation element that is a prerequisite to any recovery.
Waivers, Signage, and Express Assumption of Risk
A distinct but related set of defenses arises from express assumption of risk — situations where a plaintiff has signed a written waiver, acknowledged posted warning signs, or otherwise explicitly agreed to assume the risks of a particular activity before the injury occurred. In TBI premises liability cases, express assumption of risk claims arise with greatest frequency in the context of gym memberships, trampoline parks, rock climbing facilities, go-kart tracks, and similar recreational venues that routinely require patrons to sign liability waivers as a condition of participation.
The enforceability of these waivers varies significantly by jurisdiction and by the specific language used. Courts in 2026 continue to evaluate waivers under multi-factor tests that typically examine whether the waiver clearly and unambiguously covered the type of injury that occurred, whether the plaintiff had a meaningful opportunity to read and understand the waiver, whether the relationship between the parties involved a public interest exception that renders waivers unenforceable as a matter of public policy, and whether the defendant’s conduct rose to the level of gross negligence or recklessness — categories of misconduct that waivers generally cannot immunize.
For TBI plaintiffs specifically, the gross negligence exception is often the most promising avenue to overcome a signed waiver. If the property owner failed to maintain equipment, ignored known safety hazards, or allowed conditions to exist that created unreasonable risks beyond those inherent to the activity, plaintiff’s counsel can argue that the conduct exceeded ordinary negligence and therefore falls outside the scope of any valid waiver. In 2026, this argument has gained additional traction in premises liability contexts where defendants failed to implement safety measures that have become industry standard, including helmet requirements, padding standards, and staff supervision protocols.
The Settlement Impact: How Assumption of Risk Defenses Reduce TBI Case Values
The practical effect of assumption of risk and related defenses on TBI settlement values is substantial. With average TBI settlements reaching approximately $540,000 as of May 2026, according to data from three law firms tracking brain injury verdicts and settlements, the financial stakes of these doctrinal battles are considerable. However, that average figure reflects cases across the full spectrum of severity, venue type, and jurisdictional rules — and cases where assumption of risk defenses are vigorously pursued almost universally settle for significantly less than the average, or result in defense verdicts that yield nothing.
The mechanism through which these defenses reduce settlement value operates at multiple levels. At the most direct level, a credible assumption of risk or comparative fault argument reduces the expected value of trial for the plaintiff, which in turn reduces the floor of any rational settlement negotiation. Defense counsel use the existence of a signed waiver, evidence of voluntary participation in a risky activity, or evidence of plaintiff contributory conduct to anchor settlement negotiations far below what the damages might otherwise support. Insurance adjusters in 2026 are trained to identify and exploit these leverage points aggressively, particularly in premises liability claims where the insured’s policy limits may be substantial.
At a secondary level, the uncertainty introduced by assumption of risk defenses increases litigation costs and duration, which further erodes net recovery for plaintiffs even when they ultimately prevail. TBI cases that proceed to verdict in 2026 routinely involve extensive expert discovery, neuropsychological testing, biomechanical engineering analysis, and vocational rehabilitation assessments — all of which generate costs that must be deducted from any eventual recovery. When a strong assumption of risk defense forces a plaintiff into a lengthy trial rather than an early settlement, the transaction costs of litigation can consume a material portion of whatever damages are ultimately awarded.
The interaction between jurisdictional rules and settlement value is particularly pronounced. In states that have adopted the 2026-style modified comparative fault threshold — barring recovery once plaintiff fault exceeds the defendant’s — the mere possibility of a jury assigning the plaintiff majority fault creates enormous settlement leverage for defendants. Cases that might yield a recovery in a pure comparative fault state become genuinely dangerous in a modified comparative fault jurisdiction, and plaintiffs’ attorneys must factor this risk into their settlement recommendations.
H.R. 1493 and the 2026 Injury Prevention Context
The legal landscape governing TBI premises liability cases in 2026 does not exist in isolation from broader legislative and regulatory developments. Federal and state-level injury prevention initiatives continue to shape both the standard of care applicable to property owners and the evidentiary context in which TBI cases are litigated. H.R. 1493, which addresses traumatic brain injury research, prevention, and data collection at the federal level, reflects Congressional recognition that TBI remains a significant public health burden affecting millions of Americans annually.
For premises liability litigants, these legislative developments are relevant in several ways. First, evolving federal and state safety standards for recreational facilities — including equipment standards, supervision requirements, and concussion protocols — can inform what constitutes reasonable care on the part of a property owner, strengthening or weakening assumption of risk defenses depending on whether the operator complied with applicable guidelines. Second, enhanced data collection initiatives facilitated by federal legislation have begun to produce more robust epidemiological evidence linking specific types of premises incidents to TBI outcomes, evidence that plaintiff’s experts can use to rebut defense biomechanical arguments. Third, the heightened public and regulatory attention to brain injury prevention in 2026 may influence jury attitudes in TBI premises liability cases, potentially making jurors more skeptical of defenses that appear to minimize the seriousness of the injuries involved.
Strategies for Plaintiff’s Counsel to Overcome Assumption of Risk Defenses in TBI Cases
Effectively countering assumption of risk and related defenses in TBI premises liability cases requires a multi-layered strategic approach that begins at the earliest stages of case investigation and continues through trial. In 2026, as these defenses have grown more sophisticated, so too have the plaintiff-side strategies developed to overcome them.
The first and most foundational strategy is aggressive early investigation of the premises condition and the defendant’s actual knowledge of the risk. Primary assumption of risk doctrine requires that the risk be inherent to the activity — not a risk created by the defendant’s negligence. If plaintiff’s counsel can establish through inspection, maintenance records, prior incident reports, and witness testimony that the condition causing the TBI was a non-inherent, preventable hazard that the defendant knew about and failed to address, the primary assumption of risk defense loses much of its force. This investigation must happen quickly, before the defendant has an opportunity to remediate the hazard or records become unavailable.
The second strategy involves careful management of the plaintiff’s medical narrative from the earliest point of treatment. TBI plaintiffs in premises liability cases are often harmed by inconsistencies in the initial medical records — statements attributed to them in emergency department notes suggesting they felt fine, descriptions of the incident that downplay the force involved, or failures to disclose relevant prior head injuries. Plaintiff’s counsel working with TBI clients in 2026 must ensure that clients are educated about the importance of complete and accurate medical histories and that treating physicians understand the full scope of the symptom presentation before they are deposed or called as witnesses.
Third, plaintiff’s attorneys must retain the right expert witnesses early and build a comprehensive causation narrative that anticipates and preemptively addresses the biomechanical and neuropsychological attacks that defense teams will mount. In 2026, the standard of care for plaintiff-side TBI expert work includes not only neurological and neuropsychological experts but also life care planners, vocational rehabilitation specialists, and — in appropriate cases — biomechanical engineers who can affirmatively establish the injury-producing forces involved in the premises incident.
Fourth, counsel must develop a targeted strategy for dealing with waivers and express assumption of risk documents at the earliest stages of litigation. This includes a careful analysis of the waiver’s language against the specific facts of the case, an investigation into the circumstances under which the waiver was presented and signed, and an assessment of whether the defendant’s conduct may have crossed into gross negligence territory that renders the waiver unenforceable. In jurisdictions where waivers are routinely enforced, this analysis may significantly affect the case valuation and settlement posture.
Finally, plaintiff’s counsel in 2026 must be fully conversant with the specific comparative fault and assumption of risk rules of the applicable jurisdiction and must factor those rules into every aspect of case strategy — from initial evaluation through settlement negotiation and trial preparation. The difference between a pure comparative fault state and a modified comparative fault state with a strict threshold can mean the difference between a meaningful recovery and no recovery at all, and clients deserve counsel who understands those stakes fully.
Frequently Asked Questions: Assumption of Risk and TBI Premises Liability
Does signing a waiver at a gym or amusement park mean I cannot recover for a TBI?
Not necessarily. While waivers create a significant legal hurdle, they are not universally enforceable. Courts in 2026 continue to scrutinize waivers carefully, and many find them unenforceable when the language did not clearly cover the type of injury that occurred, when the defendant’s conduct amounted to gross negligence or recklessness, or when public policy considerations render the waiver void. An attorney experienced in TBI premises liability cases can analyze the specific waiver language, the circumstances of the incident, and the applicable jurisdictional rules to assess whether the waiver is likely to be enforced against you.
How does comparative negligence differ from assumption of risk in TBI premises liability cases?
Comparative negligence and assumption of risk are distinct doctrines that can overlap in practice. Comparative negligence asks whether the plaintiff’s own conduct contributed to causing the injury — and if so, reduces recovery proportionally. Assumption of risk, in its primary form, asks whether the plaintiff accepted the risk of the specific harm that occurred as an inherent feature of the activity, potentially barring recovery entirely regardless of the defendant’s negligence. In most jurisdictions, secondary assumption of risk has been folded into comparative negligence analysis, but primary assumption of risk remains a distinct and potentially complete bar in certain recreational and sporting contexts. In 2026, jurisdictional rules on both doctrines have continued to evolve, making venue-specific legal analysis essential in every case.
Can a pre-existing condition be used to eliminate my TBI claim under assumption of risk doctrines?
A pre-existing condition cannot by itself eliminate your claim, but it creates meaningful evidentiary challenges that defense attorneys in 2026 exploit aggressively. The eggshell skull rule protects plaintiffs with pre-existing vulnerabilities once causation is established — defendants cannot reduce liability simply because you were more susceptible to injury. However, defense teams use prior neurological or psychiatric histories to attack causation directly, arguing that your current symptoms predate the incident or stem from prior injuries rather than the premises event. Overcoming this strategy requires strong medical evidence linking the incident to your current condition, ideally supported by expert testimony that clearly distinguishes pre-existing from new injury.
How does the assumption of risk defense affect the settlement value of a TBI premises liability case?
A credible assumption of risk or comparative fault defense can significantly reduce TBI settlement values. While average TBI settlements reached approximately $540,000 as of May 2026, cases where assumption of risk defenses are vigorously asserted — particularly in recreational or sporting premises contexts — routinely settle for substantially less, or result in defense verdicts. The jurisdictional rules governing comparative fault thresholds add another layer of risk: in states like New York, where 2026 insurance reforms bar recovery entirely once a claimant’s fault share exceeds the defendant’s, even a moderately successful assumption of risk argument can completely extinguish an otherwise valuable claim. Your attorney should assess these jurisdiction-specific risks carefully when evaluating settlement offers.
What is the difference between primary and secondary assumption of risk, and which is more dangerous for TBI plaintiffs?
Primary assumption of risk is the more dangerous variant for TBI plaintiffs. It operates as a complete bar to recovery, meaning that if a court finds the injury arose from a risk inherent to the activity the plaintiff voluntarily undertook, the defendant owes no duty of care and the plaintiff recovers nothing — regardless of how serious the brain injury is or how much the defendant may have contributed to creating the dangerous condition. Secondary assumption of risk, by contrast, is folded into comparative fault analysis in most jurisdictions, reducing but not necessarily eliminating recovery. For plaintiffs who have suffered serious traumatic brain injuries in premises liability contexts, a primary assumption of risk ruling is among the most devastating possible outcomes, underscoring the importance of retaining counsel who can develop early, aggressive arguments to defeat the doctrine before it reaches the jury.
Robert Callahan is a TBI and Catastrophic Injury Researcher with extensive knowledge of personal injury law and settlement values across the United States. With years of experience analyzing brain injury / tbi claims only cases, Robert helps injury victims understand their legal rights and the potential value of their claims. Robert is not an attorney and the information provided is for educational purposes only.