Deadlines Matter: Statutes of Limitations in Mass Tort Claims

The single most common reason otherwise strong injury claims fail is timing. Every state sets a statute of limitations — a legal deadline for filing a lawsuit — and once it passes, even a clear-cut case can be barred forever.

For most personal injury claims, the clock runs between one and six years depending on the state. But mass tort injuries rarely follow a neat timeline. A cancer caused by years of chemical exposure may not be diagnosed until decades after the exposure began. That is where the "discovery rule" comes in: in most states, the clock starts not when the injury happened, but when you knew — or reasonably should have known — that your injury might be connected to the product.

That nuance is why two people with the same diagnosis can face very different deadlines. A person diagnosed with non-Hodgkin's lymphoma in 2015, before the herbicide link was widely publicized, may be treated differently than someone diagnosed after a major verdict made national news.

Some events can pause, or "toll," the clock: the injured person being a minor, certain bankruptcy proceedings by the defendant, or a defendant's active concealment of the danger. Special laws can also create new windows — the Camp Lejeune Justice Act of 2022 is a prominent example, opening a two-year federal filing period for water contamination claims that state deadlines had long since closed.

The practical takeaway is simple: never assume you are too late, and never assume you have plenty of time. Both assumptions cost people real compensation every year. A free case review takes minutes, and a law firm can tell you exactly which deadline applies to your state and situation.