You have probably heard the term “negligence,” especially how it applies to personal injury cases. When someone is negligent and causes another person injury, the law says they are responsible for paying for the injured person’s losses and suffering. Proving negligence is not always easy as there are several elements of negligence that must be established. However, there is another legal principle that can make it easier to win a personal injury case.
If the at-fault party caused your accident because they were breaking the law, “negligence per se” is an important legal doctrine that can reduce your burden of proof and make it easier to recover the compensation you deserve.
Here is how the California negligence per se doctrine works and how it can play a crucial role in your personal injury lawsuit.
Negligence per se is a legal doctrine that presumes someone is negligent if they caused injury to someone else because they violated the law. The legal negligence per se definition is covered by California Evidence Code Section 669.
To win a personal injury case, you must prove the defendant was negligent and their negligence was a major factor in causing your injuries. In a typical case, this requires proving the defendant did not behave in a way a reasonable person would have in the same circumstances. Negligence per se means the defendant’s actions are already presumed to be unreasonable once they violate the law.
Negligence per se example:
Joe strikes another car in an intersection. Rebecca, the other motorist, suffers a fracture and concussion. Police cite Joe for speeding and texting while driving.
Rebecca files a lawsuit against Joe seeking compensation for her injuries. During the trial, Rebecca establishes Joe was negligent per se because he violated laws designed to avoid accidents. She does not need to separately show that Joe’s behavior was unreasonable when he caused the accident.
There are four key elements of negligence per se. To establish negligence per se, you must show:
To prove the first element, your case must show that the defendant violated a specific statute or regulation. In a car accident, this may involve showing the defendant was speeding, driving under the influence, texting while driving, or committing another type of traffic violation.
To have a valid case for negligence as a matter of law, you must be a member of the class of people the law was designed to protect and you suffered harm the law was intended to prevent. This is straightforward with traffic violations: traffic laws are designed to prevent accidents and injuries to other motorists, pedestrians, cyclists, and passengers.
Finally, you must show that it’s more likely than not that the defendant’s conduct and violation of the law was a proximate cause of your injuries. Proving causation can be straightforward, but it isn’t always clear. There are also two elements to causation: the actual cause and the proximate cause. Actual cause is the action that instigated the accident or harm. Proximate causation means something was a significant factor in causing the accident or harm.
Actual cause is easy to establish in some cases such as a motorist running a red light and hitting someone in the intersection. Proximate cause can be more complicated. To prove the defendant’s violation of the law caused your accident, the court may consider:
The general standard of negligence requires proving four elements:
The doctrine of negligence per se can be used to prove the first two elements of negligence: standard of care and duty of care. By establishing negligence per se, you have shown the defendant owed you a duty of care (you were someone the statute was designed to protect) and they violated the standard of care you were owed by violating the law.
This means it is no longer up to a jury to decide what the standard duty of care was in your circumstances, or how a reasonable person would have behaved. They are also not left to decide if the defendant’s behavior was outside of what a reasonable person should have done.
It’s important to understand that negligence per se can be rebutted. This means the defendant has the right to submit their own evidence to counter that they were negligent. However, establishing negligence per se shifts the burden of proof from the plaintiff to the defendant who must now prove they were not negligent when they violated the law.
According to Evidence Code Section 669, the presumption of negligence can only be rebutted by proving:
Once you have established negligence per se, it isn’t easy to counter. The defendant must provide evidence that a reasonable person could be expected to break the law in the situation. They may submit evidence that:
While difficult, it isn’t impossible to counter negligence per se. If the defendant’s brakes failed and they could not slow down before the accident, they may not be found negligent per se. A defendant talking on the phone while driving may have a valid excuse if they were reporting an emergency like an injured pedestrian they passed on the street. A driver may also have a valid excuse for speeding if they were transporting someone to the doctor or hospital whose condition suddenly worsened.
If you believe the at-fault party was violating the law when your accident occurred, the negligence per se doctrine can make it easier to win your case. By proving negligence per se, you do not need to prove the standard of care and how the defendant’s behavior differed from how a reasonable person would have behaved in the same circumstances. You have also shown that the defendant’s actions were a proximate cause of your accident.
Proving negligence per se alone isn’t enough to win your case. You must still show actual causation, generally the easier aspect of causation to establish, and your damages. However, it makes the burden of proof much lower and shifts the burden to the defendant. If the jury does not find the defendant was negligent per se, they will still consider other evidence in your case to decide if the defendant was still otherwise negligent.
A California personal injury lawyer will present the strongest case possible to establish negligence per se. Depending on the circumstances of your accident, proving the defendant violated the law may involve:
Juries in California are given California Jury Instruction CACI 418 or “Presumption of Negligence per se” to help them determine when a defendant is negligent as a matter of law. The instructions clearly state that if the plaintiff proves the defendant violated the statute in question and it was a substantial factor in causing the harm, the jury must find the defendant was negligent without a valid excuse.
If you have been injured due to someone else’s careless, intentional violation of the law, Berman & Riedel, LLP is ready to fight for you. Our San Diego law firm represents clients throughout California in cases involving car accidents, bicycle accidents, dangerous products, and more. Contact our law office today to schedule a free consultation with a San Diego personal injury lawyer to discuss your case and how we can help.





The first step is to report the abuse to the appropriate authorities. Call 911 if the situation is life-threatening. Otherwise, it can be reported to the police and appropriate agencies. For abuse in the community or a hospital, call Adult Protective Services at 1-833-401-0832. For abuse in a nursing home or long-term care facility, contact your local long-term care ombudsman or call 1-888-452-8609.
The next step is contacting a California elder neglect lawyer to help you safeguard your loved one’s rights, investigate the abuse, and hold the facility accountable.
There is no way to determine the exact value of an elder abuse or personal injury case, especially early in your case. However, an experienced attorney can give you an estimated range based on their experience with similar cases.
There are many factors that may influence the value of your case, such as:
Some damages are easy to calculate, such as lost wages and medical bills. Calculating the value of diminished earnings for the rest of your life or future medical needs, however, may require the help of experts. Non-economic damages like pain and suffering have no intrinsic financial value. These damages are challenging to calculate.
If your case goes before a jury, you may potentially be able to recover more than you could through a settlement. However, this introduces a new element of risk: the jury. The circumstances of your accident and even how sympathetic you or the defendant are can influence the outcome.
During your consultation and throughout your case, we will help you understand how these factors influence your case. We will also work tirelessly to document the value of all your damages and pursue maximum compensation on your behalf.




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