Breach of Duty
If a legal duty of care exists, then a plaintiff must show that the defendant did not meet it. Normally,
the plaintiff proves this by showing that the defendant did not act as a reasonable person would have
under the circumstances.
When a legislature sets a minimum standard of care for a particular activity, in order to protect a
certain group of people, and a violation of the statute injures a member of that group, the defendant has
committed negligence per se. A plaintiff who can show negligence per se does not have to prove
breach of duty.
Causation
To win, the plaintiff must also show that the defendant’s breach of duty caused the plaintiff’s harm.
Courts look at two separate causation issues: Was the defendant’s behavior the factual cause of the
harm? Was it the proximate cause?
Res Ipsa Loquitor
Meaning “the things speaks for itself.” Normally, a plaintiff must prove factual cause and proximate
cause in order to establish negligence. This rule allows a court to infer causation because an event
happened that would not occur unless the defendant has been negligent.
Additional Case: You Be the Judge: Grith v. Valley of Sun
Recovery, Inc.1
Facts: Don Gorney, a repossession man who worked for Valley of Sun Recovery, attempted to
repossess Marsalek’s car. He arrived at 4:00, unscrewed an overhead street lamp, and then unlocked the
car, setting off its alarm. Neighbors investigated and called the police, while Gorney hid. When they
had left, he again set off the car alarm, bringing out various neighbors, including Griffith. One neighbor
passed a shotgun to another, but it went off accidentally and severely injured Griffith, who sued Valley
of Sun. The trial court granted summary judgment for Valley of Sun, and Griffith appealed.
You Be the Judge:
• Did Valley of Sun have a duty to Griffith?
• If so, did the company breach its duty?
• If so, was the breach the factual cause of the injury?
• If so, was this type of injury foreseeable?
Holding: Summary judgment for Valley of Sun reversed and remanded for trial. The Court held “if
reasonable minds could differ and there is a debatable question on the foreseeability of harm, then such
an issue is ordinarily a question for the jury. In [this] case, previous efforts to take possession of the car
were frustrated by the car burglar alarm. Gorney was aware of the violent confrontation that had
occurred in a prior attempt. Gorney’s actions created an explosive atmosphere, created confusion, and
set the stage for the resulting injury. The facts present a jury question as to whether a reasonable man
could have foreseen that his actions were creating a confrontation where someone could be injured.”
On the issue of superseding cause, the Court relied on the fact that Gorney was in the driver’s seat of
the car, with the neighbor pointing the shotgun at Gorney from outside the passenger window, when
the neighbor passed the gun to Williams, the gun discharged, and Griffith was shot. Since Gorney’s
(and Valley of Sun’s) conduct continued up until Griffith was injured there was no superseding cause
under Arizona law.
Question: Does this decision mean that Valley of Sun is liable for Griffith’s injuries?
Answer: No. It means only that Griffith can present his case to a jury.
1 126 Ariz. 227, 613 P.2d 1283 Arizona Court of Appeals, 1980.