Personal Injury Laws in Massachusetts: Deadlines, Fault Rules & Damages

In Massachusetts, you generally have three years from the date of injury to file a personal injury lawsuit for negligence. This deadline comes from Massachusetts General Laws Chapter 260, Section 2A, which covers "actions of tort" and "actions of contract to recover for personal injuries." Miss it, and a Massachusetts court will almost always dismiss the case regardless of how strong the underlying claim is. If a city, town, or state agency is involved, a much shorter notice deadline applies before the three-year clock even matters — see below.

This guide covers the core rules an injured person in Massachusetts needs to know: the filing deadline, how shared fault affects a payout, whether damages are capped, how the state's car-insurance system works, and the rule for dog-bite injuries. Massachusetts statutes are amended by the Legislature and interpreted by the courts, so always confirm the current text of any statute cited here before relying on it for a real deadline.

1. Statute of limitations: three years

Under M.G.L. c. 260, § 2A, most personal injury claims — car crashes, slip-and-falls, product injuries, dog bites, and general negligence — must be filed within three years of the date the injury occurred. The Massachusetts courts also apply a "discovery rule" in some cases, meaning the clock can start when the injury was or reasonably should have been discovered, rather than the date of the underlying incident — this matters most for cases where harm isn't immediately obvious. Separate, often shorter, deadlines apply to medical malpractice (M.G.L. c. 260, § 4) and to wrongful death claims, and the clock can be tolled while an injured person is a minor or legally incapacitated. Because exceptions are fact-specific, don't count on informal advice for the exact date your case is due — confirm the applicable deadline against the current statute or with the Massachusetts Trial Court.

2. Shared fault: modified comparative negligence, 51% bar

Massachusetts uses a modified comparative negligence rule under M.G.L. c. 231, § 85. The statute bars recovery only if the injured person's own negligence is greater than the combined negligence of the party or parties being sued — in practice, this is described as a 51% bar: if you are found 50% or less at fault, you can still recover, but if you are 51% or more at fault, you recover nothing.

• If you're found partly at fault, your damages award is reduced by your percentage of fault. For example, a $100,000 award reduced by 20% fault would net $80,000.
• If you're found 51% or more at fault, Massachusetts law bars recovery entirely.
• Fault percentages are typically decided by a jury (or judge in a bench trial) and are often contested by insurers early in a claim — don't accept an insurance adjuster's fault assessment at face value.

3. Damage caps: malpractice cap only, no general PI cap, punitive damages restricted

Massachusetts does not cap general economic damages (medical bills, lost wages, future care costs) in ordinary personal injury cases, and it does not impose a blanket cap on non-economic damages (pain and suffering) either.

• Medical malpractice only: Under M.G.L. c. 231, § 60H, non-economic damages ("pain and suffering, loss of companionship, embarrassment and other items of general damages") in a medical malpractice case are capped at $500,000, unless the jury finds a "substantial or permanent loss or impairment of a bodily function," "substantial disfigurement," or other special circumstances that would deprive the plaintiff of just compensation — in which case the cap doesn't apply. This cap applies specifically to malpractice claims against health care providers, not to car crashes, slip-and-falls, or other everyday injury claims.
• Punitive damages: Massachusetts common law generally does not allow punitive damages in ordinary negligence cases; they're only available when a specific statute authorizes them. The main example is the wrongful death statute, M.G.L. c. 229, § 2, which permits punitive damages (a minimum of $5,000) only where death was caused by malicious, willful, wanton, or reckless conduct, or gross negligence.

Confirm any dollar figure against the current statutory text before relying on it — caps can be amended, and courts sometimes carve out exceptions in specific fact patterns.

4. Car insurance: Massachusetts is a no-fault (PIP) state

Massachusetts requires drivers to carry Personal Injury Protection (PIP) coverage under M.G.L. c. 90, § 34M, generally with a minimum of $8,000 per person. PIP pays medical bills, a portion of lost wages, and replacement services after a car accident regardless of who was at fault, up to the policy limit.

Because it's a no-fault system, there's a "tort threshold" under M.G.L. c. 231, § 6D before you can sue the at-fault driver for pain and suffering and other damages beyond PIP. Generally, you must have either:

• more than $2,000 in reasonable and necessary medical expenses, or
• a "serious injury" — such as a fracture, permanent and serious disfigurement, loss of a body part, or loss of sight or hearing, or death.

If your injury doesn't clear that threshold, your remedy is generally limited to PIP benefits, not a lawsuit against the other driver for pain and suffering.

5. Dog bites: strict liability

Massachusetts imposes strict liability on dog owners under M.G.L. c. 140, § 155. This means an injured person generally does not need to prove the owner was negligent or knew the dog was dangerous — a "one bite" history is not required. The owner (or the parent/guardian if the owner is a minor) is liable for injury or property damage a dog causes, with limited exceptions: the injured person was trespassing, committing another tort, or was teasing, tormenting, or abusing the dog at the time. For children under age seven, the law presumes the child was not doing any of those things, and the burden shifts to the defendant to prove otherwise. Dog-bite claims fall under the general three-year personal injury deadline in M.G.L. c. 260, § 2A.

Claims against the government: a much shorter notice deadline

If your injury involves a city, town, county, state agency, or a public employee acting within the scope of employment, the ordinary three-year deadline does not give you the full runway you might expect. Under the Massachusetts Tort Claims Act, M.G.L. c. 258, § 4, you must first "present" a written claim to the proper executive officer (for example, a city or town clerk, mayor, city/town manager, or city/town counsel) within two years of the date the claim arose. The public employer then has up to six months to respond in writing; no response is treated as a final denial. Only after presentment (and denial or the six-month period passing) can a lawsuit be filed, and the overall claim still cannot be brought more than three years after it accrued. Presentment must actually be received by the correct official within the two-year window — mailing it before the deadline is not enough on its own. Given how strictly Massachusetts courts have enforced this rule, treat any claim against a government body as time-critical from day one.

What to do in Massachusetts

1. Get medical care and document everything. Prompt treatment protects your health and creates the medical record that supports any claim, including PIP.
2. Report the incident. File a police report for a crash, notify a property owner or manager for a fall, or report a dog bite to local animal control — these records help establish the facts.
3. Notify your own auto insurer promptly if a vehicle is involved to open a PIP claim under M.G.L. c. 90, § 34M, regardless of fault.
4. Identify whether a government entity may be involved (a public road, municipal vehicle, public building, or government employee). If so, treat the two-year presentment deadline under M.G.L. c. 258, § 4 as your real deadline, not the three-year general limit.
5. Track the three-year statute of limitations under M.G.L. c. 260, § 2A for your county's applicable Massachusetts Trial Court (Superior Court or District Court, depending on the damages sought), and confirm whether any tolling or discovery-rule exception could apply to your situation.
6. Keep records of your own conduct at the time of injury (speed, warnings, signage, distractions) since Massachusetts's 51% bar rule under M.G.L. c. 231, § 85 means your own share of fault can reduce or eliminate recovery.
7. Confirm current statutory text for any deadline, cap, or dollar figure before you rely on it — check the Massachusetts Legislature's website (malegislature.gov) or consult the Massachusetts Trial Court for the most current version of any statute mentioned here.

This article is general information about Massachusetts law, not legal advice for your specific situation.