Discovery rule

What is the discovery rule?

The discovery rule is an equitable exception to the ordinary rule that the limitations clock starts on the date of injury. It recognizes that some harm is not knowable when it occurs.

Without it, a claim could expire before the injured person had any way of learning they had been hurt, which would be an obviously unjust result.

It postpones the start of the statute of limitations until the injured person had a reasonable basis to know both the injury and its likely cause.

It applies narrowly rather than generally, so most claims still run from the date of the incident.

When does the rule apply?

It matters most where harm is latent, gradual or concealed.

• Surgical items or errors discovered long after the procedure
• Misdiagnosis where the true condition surfaces years later
• Illness from occupational or environmental exposure
• Defective products whose failure is not apparent immediately
• Harm that was actively concealed by the responsible party
• Injuries that only later prove connected to an earlier event

What standard applies?

The test is objective as well as subjective. It asks not only what you actually knew but what a reasonable person exercising ordinary diligence would have known.

That means the clock can start before you understood the full legal significance of what happened. Knowing you were injured and that it may have been someone's fault is generally enough.

You do not need to know the identity of every responsible party or the precise legal theory before the period begins.

How is the rule applied in practice?

It is usually litigated rather than assumed. Defendants argue the plaintiff should have known earlier, and courts examine what information was available and when.

New Jersey resolves these disputes through a hearing where the judge determines when the claim accrued, separate from the merits of the case.

Because the outcome depends heavily on the specific facts, anyone relying on the rule should expect the timing itself to be contested.

Common questions

Does the discovery rule apply to car accidents?

Rarely, since the injury and its cause are usually apparent immediately. It occasionally applies where a condition connected to the crash emerges much later.

What if I did not realize how serious my injury was?

Not knowing the full extent generally does not delay the clock. Knowing you were injured and that another party may be responsible is usually sufficient to start it.

Does the rule apply to public entity claims?

The 90 day notice of claim requirement operates on its own terms, and relief from it is analyzed separately under the Tort Claims Act.

Who decides when my claim accrued?

A judge, at a hearing held specifically to determine the accrual date. It is decided separately from the merits of the underlying claim, and both sides present evidence about what you knew and when a reasonable person would have connected the harm to its cause. Medical records showing when a condition was first identified are central to that determination.