Most people injured in an accident identify one person to blame and stop there. The other driver. The store where they fell. The neighbor whose dog got loose. That instinct is understandable and it routinely leaves money on the table, because liability in Arizona is a question of who the law holds responsible, which is a wider group than whoever was physically present when you got hurt.
Fault and Liability Are Not the Same Thing
Fault describes conduct. Liability describes a legal obligation to pay. The two overlap constantly but they are not identical, and the gap between them is where cases are won.
A delivery driver runs a red light. He is at fault. His employer is liable under the doctrine of respondeat superior, which holds an employer responsible for the negligent acts of an employee acting within the scope of employment. The driver may carry a minimum policy. The employer carries a commercial policy worth many times more. Same collision, entirely different outcome depending on who gets named.
Establishing any of this still requires proving the elements of negligence against each party you intend to hold responsible.
Employers and Commercial Defendants
Beyond respondeat superior, Arizona recognizes direct claims against a company for its own conduct. Negligent hiring where a dangerous employee was put behind the wheel. Negligent supervision. Negligent entrustment where a vehicle was handed to someone known to be unfit. Negligent maintenance where a company failed to service equipment properly.
These theories matter most in truck accident claims, where federal motor carrier regulations govern driver qualification, hours of service, inspection, and cargo securement. A violation of those rules opens a line of responsibility that runs past the driver and into the carrier itself. Similar layers exist in rideshare accident claims, where coverage depends on whether the app was on and whether a passenger was in the vehicle.
Property Owners and Occupiers
An owner or occupier owes a duty to people lawfully on the premises, and the scope of that duty depends on the visitor’s status and on what the owner knew or should have known about the hazard. Proving a premises liability claim usually turns on notice, meaning how long the danger existed and what a reasonable inspection would have caught.
Responsibility frequently splits here as well. A property owner, a management company, a maintenance contractor, and a tenant can all hold pieces of the same obligation depending on the lease and the service agreements.
Dog Owners Face Strict Liability
Arizona does not give dogs one free bite. Under A.R.S. § 11-1025, the owner of a dog that bites someone in a public place, or lawfully in a private place including the owner’s own property, is liable for the damages regardless of the dog’s prior viciousness or the owner’s knowledge of it. The statute also bars courts from considering breed when deciding whether a dog is aggressive or has created liability, and a 2025 amendment now requires the person responsible for the dog to give the bite victim the owner’s contact information. Limited exceptions apply to police and military dogs. Our work on dog bite claims covers how these cases are handled and where homeowner coverage comes in.
Government Defendants
Cities, counties, school districts, and state agencies can be liable for dangerous roadway conditions, negligent maintenance, and the conduct of their employees. They are also protected by procedural rules that most claimants never learn about until it is too late, which is why anyone with a possible government defendant should read the notice of claim deadlines before doing anything else.
Each Defendant Pays Only Its Own Share
This is the rule that shapes strategy in every Arizona case with more than one responsible party.
Under A.R.S. § 12-2506, liability is several only and not joint. Each defendant is liable solely for the damages allocated in direct proportion to that defendant’s percentage of fault, and the court enters a separate judgment for that amount. You cannot collect one defendant’s share from another. Joint responsibility survives only in narrow situations involving parties acting in concert on an intentional tort, an agent or servant relationship, or liability arising under the Federal Employers’ Liability Act.
The practical consequence is simple. If a responsible party has no assets and no insurance, their percentage may be uncollectible, and every point of fault assigned to them reduces what you actually recover.
The Empty Chair
Section 12-2506 also allows a defendant who gives notice before trial to have the jury assign fault to someone who is not a party to the case. That assessment creates no liability for the absent person and cannot be used against them elsewhere. It exists only to size the named defendants’ shares.
Defense counsel use it well. A phantom vehicle, a vehicle manufacturer, a road contractor, an employer, or a prior treating physician can all be nominated to absorb fault that would otherwise attach to the client. Responding requires investigation that should have begun immediately after the crash, and it interacts directly with how shared fault percentages get allocated across everyone involved.
Liability Means Nothing Without Coverage
A defendant who is legally responsible and financially empty produces a judgment nobody can collect. Identifying liability and identifying available insurance are separate investigations that have to happen together. That means locating every applicable policy, including underinsured and uninsured motorist coverage on your own vehicles, resident relatives’ policies, umbrella policies, and commercial coverage sitting behind a business defendant. When a carrier then refuses to deal fairly with a clear claim, insurance bad faith becomes its own cause of action.
Talk to an Arizona Injury Attorney
Identifying every responsible party is work that has to happen early, while records still exist and deadlines are still open. Citrine Law represents injured people across Yuma County and southwestern Arizona and never insurance companies. We handle injury claims of every kind, including multi vehicle collisions where responsibility is genuinely contested. The consultation is free and we are paid only if we recover for you, so reach out today.