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After a serious accident, the first question most people ask is “who’s responsible?” In legal terms, that question is about liability; who the law holds financially accountable for the harm you suffered. Liability isn’t always obvious, and it’s rarely limited to one person. A crash that looks like a simple two-car collision might involve a negligent driver, the driver’s employer, a trucking company, a parts manufacturer, and a municipality that failed to maintain the roadway. Identifying every liable party is one of the most important things a personal injury attorney does, because each one represents another insurance policy and another source of compensation.
What Liability Means Under Missouri Law
Liability is legal responsibility for an injury or loss. In Missouri personal injury cases, liability is usually based on negligence; the failure to use the degree of care a reasonably careful person would use under the same circumstances. To establish liability, the injured person must prove duty, breach, causation, and damages by a preponderance of the evidence. The party who breached their duty and caused harm is liable for the resulting losses.
Missouri also applies its pure comparative fault doctrine to liability questions. Even if you bear some responsibility for what happened, you can still recover damages; your award is simply reduced by your percentage of fault.
Types of Liability in Missouri Personal Injury Cases
Not every case fits the same mold. Missouri recognizes several distinct theories of liability, each with its own rules and requirements.
Direct Liability
Direct liability applies when a person’s own conduct caused the injury. The drunk driver who caused a DUI accident, the dog owner who failed to restrain an aggressive animal, the property owner who ignored a known hazard; each is directly liable for the harm their conduct produced.
Vicarious Liability
Under the doctrine of respondeat superior, an employer can be liable for the negligence of an employee acting within the scope of employment. This is enormously important in trucking accident and rideshare accident cases, where the company behind the driver often has far deeper insurance coverage than the driver alone.
Premises Liability
Property owners owe a duty of care to people lawfully on their property. Under Missouri law, that duty is highest for invitees; customers in a store, guests at a restaurant, or anyone there for the property owner’s benefit. When a slip on an unmarked wet floor or a fall on a broken stair causes injury, the owner can be held liable under premises liability law. See our slip and fall guide for more detail on how these cases are proven.
Product Liability
Manufacturers, distributors, and sellers can be liable for injuries caused by defective products. Missouri applies strict liability in many of these cases, meaning the plaintiff does not have to prove negligence — only that the product was defective and unreasonably dangerous when it left the manufacturer’s control.
Statutory Liability
Some duties are created directly by statute. For example, Missouri’s dram shop law (RSMo § 537.053) imposes liability on alcohol licensees who serve visibly intoxicated patrons or minors when the conviction requirements are met. Violations of safety statutes — speed limits, federal trucking regulations, building codes — often serve as direct evidence of a breach of duty.
Joint and Several Liability in Missouri
When more than one party shares the blame, Missouri’s joint and several liability rule under RSMo § 537.067 becomes critical. Under the statute, any defendant found 51% or more at fault can be held responsible for the full amount of the compensatory damages judgment — not just their proportional share. Defendants below 51% pay only their share.
This rule matters most when one defendant is uninsured, underinsured, or judgment-proof. If the most-at-fault party can’t pay, but a co-defendant exceeds 51%, the injured plaintiff can still recover the full judgment from the solvent defendant. Building a case that establishes a defendant’s share above 51% is sometimes worth more than reducing it.
Common Examples of Shared Liability
- A rideshare crash where both the rideshare driver and a delivery van driver contributed to the wreck; each driver and each company can be liable.
- A parking lot accident where one driver backs into another, but the property owner’s poor sight-line design contributed to the collision.
- A truck crash caused by driver fatigue, a fatigued driver assigned by the carrier, and brakes that a maintenance contractor failed to service.
- A dog attack by a dog the apartment complex knew was dangerous but allowed on the property; both owner and landlord can share liability.
How Liability Is Proven
Establishing liability takes more than telling the story. It takes documentation — police reports, photographs, surveillance footage, evidence, maintenance records, employment records, black-box data from vehicles, and witness statements. The earlier this evidence is preserved, the stronger the case becomes.
Talk to a Missouri Attorney About Your Case
Sorting out who is liable, and what insurance policies apply, is one of the first jobs of any personal injury investigation. Rob Schmittgens has handled liability disputes for injured Missourians for nearly a decade, including complex multi-party crashes involving employers, contractors, and government entities. Contact Schmittgens Injury Law Firm for a free consultation, and we’ll walk through your situation together. There’s no fee unless we recover compensation for you.