Pennsylvania negligence law lets an injured person sue for compensation when someone else’s carelessness caused the harm, but recovery depends on two things above all: filing within two years, and carrying no more than half the blame yourself. Below that 50% line, your award is reduced by your share of fault. Above it, you get nothing. Special rules tighten the picture further when the defendant is a government body or a licensed professional.
What You Have to Prove
Every negligence claim in Pennsylvania rests on four elements: a duty of care, a breach of that duty, causation, and actual damages.
A duty of care arises out of the relationship or situation. Drivers owe one to other people on the road. Doctors owe one to patients. Property owners owe one to visitors. Whether someone breached that duty is measured against what a reasonable person would have done in the same circumstances.
Causation splits in two. Factual cause asks whether the injury would have happened but for the defendant’s conduct. Proximate cause asks whether the harm was a foreseeable consequence of that conduct. Both have to be shown.
Finally, you need actual losses. A near miss is not a case. Medical bills, lost wages, repair costs, or other documented harm have to exist before a court will award anything.
The Two-Year Deadline
Pennsylvania gives you two years to file a negligence lawsuit. That applies to personal injury, wrongful death, and property damage claims alike, and the clock generally runs from the date of the injury.1Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Section 5524
Miss it by a day and the case is almost certainly over. The defendant raises the statute of limitations, the court dismisses, and evidence of even flagrant negligence will not save the claim. This is where self-represented plaintiffs most often lose: they assume there is more time, or they spend so long gathering proof that the deadline passes.
The Discovery Rule
When an injury is not immediately apparent, the two-year clock does not start until you know, or reasonably should know, that you were injured and that someone else’s conduct may have caused it. This comes up often in medical cases, where a surgical error may produce no symptoms for months or years. Once you have that knowledge, the deadline starts running even if you have not yet identified every potentially liable party.
Children
For a child injured by negligence, the statute of limitations is paused during minority. The two-year clock starts at age 18. A child injured at 10 has until age 20 to sue.2Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Section 5533
How Your Own Fault Affects Recovery
Pennsylvania follows modified comparative negligence under 42 Pa. C.S. § 7102. Your own carelessness does not automatically end the case, but it reduces the payout and can wipe it out.3Pennsylvania General Assembly. Pennsylvania Code 42 – Section 7102
If the jury finds you 50% at fault or less, you still recover, but the award drops by your percentage. A $200,000 verdict with 25% plaintiff fault becomes $150,000. If your fault crosses 50%, recovery falls to zero. That bright line makes the fault-percentage fight one of the most consequential parts of any Pennsylvania negligence trial.4Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Section 7102
The jury has to assign a specific fault percentage to every party, including you. That allocation also drives how liability is split among multiple defendants.
What You Can Recover
Damages fall into two broad categories.
Economic damages cover losses with a clear dollar value: medical expenses, lost income, future earning capacity, rehabilitation costs, and property repair or replacement. Bills, pay stubs, and estimates carry these.
Non-economic damages compensate for losses that do not come with a receipt: pain and suffering, emotional distress, loss of enjoyment of life, disfigurement, and loss of companionship. Juries have wide latitude in setting these amounts because no objective formula exists for pricing chronic pain or a permanent scar.
Pennsylvania’s constitution prohibits caps on damages in private negligence cases. There is no statutory ceiling on what a jury can award between private parties. Government claims are the exception, and the caps there are strict (see below).
When One Defendant Pays Everything
When more than one defendant shares blame, Pennsylvania’s Fair Share Act controls who pays what. The default rule is several liability only: each defendant pays their proportional share and nothing more. A defendant found 20% at fault on a $500,000 verdict owes $100,000.3Pennsylvania General Assembly. Pennsylvania Code 42 – Section 7102
Joint and several liability, which lets a plaintiff collect the entire judgment from a single defendant, applies only in limited situations:
- A defendant found at least 60% at fault owes the full amount, regardless of the others’ ability to pay.
- Defendants who committed intentional torts face full liability.
- Intentional misrepresentation (fraud) triggers joint and several liability.
- Hazardous substance releases and certain liquor code violations also fall outside the proportional-only default.
This matters most when one defendant is broke or missing. If three defendants caused the injury and one has no assets, a defendant below the 60% threshold generally cannot be forced to cover the shortfall, and the plaintiff absorbs that uncollectable share.4Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Section 7102
Negligence Per Se and Employer Liability
Two doctrines can make a case easier to build.
Negligence per se lets you skip the reasonable-person analysis when the defendant violated a specific safety statute. The violation itself establishes the breach. A driver who caused a crash running a red light in violation of the Vehicle Code cannot argue the conduct was somehow reasonable. Two conditions apply: the statute must have been designed to prevent the kind of harm that occurred, and you must be the type of person the statute was meant to protect. Causation and damages still have to be proven.5Pennsylvania General Assembly. Pennsylvania Code Title 75 – Vehicles Chapter 37
Vicarious liability, under the doctrine of respondeat superior, holds employers responsible for negligent acts committed by employees during the course of employment. If a delivery driver runs a stop sign on the job and injures someone, the employer is on the hook alongside the driver. The critical question is whether the employee was acting within the scope of their duties. Personal errands and conduct wholly unrelated to the job generally take the employer off the hook, but the line is fact-specific. Courts weigh whether the conduct was the kind the employee was hired to perform, whether it occurred within the authorized time and place of the job, and whether it was motivated at least in part by the employer’s interests.
Suing a Government Body
Suing a Pennsylvania government body for negligence is harder than suing a private party. Both the Commonwealth and local agencies (cities, townships, school districts) enjoy broad immunity. That immunity is waived only in specific, narrow categories, and even when it is waived, damages are capped.
Commonwealth Claims
The Commonwealth waives sovereign immunity for negligence in a limited set of areas, including motor vehicle operations, medical care at state facilities, care of personal property in the government’s possession, and dangerous conditions on state-owned property or highways. Damages are capped at $250,000 per plaintiff and $1,000,000 total for all claims arising from the same incident, regardless of how severe the injuries are.6Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Chapter 85
Local Government Claims
Local agencies have their own list of immunity exceptions under 42 Pa. C.S. § 8542, covering categories like vehicle operations, care of personal and real property, dangerous conditions involving trees and traffic controls, utility service facilities, streets, and sidewalks. The damage cap is $500,000 in the aggregate for all claims arising from one occurrence.6Pennsylvania General Assembly. Pennsylvania Code 42 – Judiciary and Judicial Procedure Chapter 85
If the negligence does not fit within an enumerated exception, the claim fails at the threshold no matter how clearly the government was at fault.
Suing a Doctor or Other Licensed Professional
Negligence claims against licensed professionals, most often doctors but also engineers, architects, accountants, and attorneys, carry an extra procedural hurdle. Pennsylvania Rule of Civil Procedure 1042.3 requires the plaintiff’s attorney to file a certificate of merit with the complaint or within 60 days after filing it.7Pennsylvania Code and Bulletin. Pennsylvania Code 231 Rule 1042.3 – Certificate of Merit
The certificate has to state that a qualified licensed professional has reviewed the case and concluded that the defendant likely fell below acceptable professional standards and that the substandard conduct caused the harm. A separate certificate is required for each professional defendant. Failure to file on time can dismiss the claim, and extensions are not guaranteed. Line up an expert before filing suit, not after.
How the Case Moves Once You File
A Pennsylvania negligence suit starts with filing a complaint at the Prothonotary’s office in the county where the incident occurred. The complaint has to describe the facts, the legal basis for the claim, and the relief requested.
The defendant then has to be served. Original process within Pennsylvania is generally served by the county sheriff, with limited situations in which a competent adult may serve instead.8Cornell Law Institute. Pennsylvania Code 231 Rule 400 – Person to Make Service Once served, the defendant has 20 days to file an answer or other responsive pleading.9Pennsylvania Code and Bulletin. Pennsylvania Code 231 Rule 1026
One deadline is easy to miss and expensive to lose. The right to a jury trial is waived unless a party files a written demand no later than 20 days after the last permissible pleading is served. Miss that window and a judge, not a jury, decides the case.10Pennsylvania Code and Bulletin. Pennsylvania Code 231 Rule 1007.1
After the pleadings close, both sides enter discovery: written interrogatories answered under oath, depositions, subpoenas for medical records and other documents, and, when injuries are disputed, physical examinations of the plaintiff. Most negligence cases are won or lost here. Consistent testimony, thorough documentation, and solid expert support put settlement pressure on the defendant. Medical records that do not match the claimed injuries, or a deposition that contradicts the complaint, can unravel a case long before trial.