A civil-wrong concept defining liability rules for compensating harm or preventing wrongful interference with protected interests. It specifies required elements such as duty, prohibited conduct, causation, and legally cognizable harm or defines protection of commercial and intangible interests where applicable. It does not impose liability where the required element set is not satisfied or where recognized privileges or defenses apply. It allocates responsibility for injury or interference and shapes the scope and measure of monetary and equitable relief. The concept is generally stable, though doctrinal refinements and statutory updates may alter elements or defenses over time.

Principle

A threshold condition limits proportional recovery: if plaintiff fault < threshold, damages are reduced proportionally; if plaintiff fault ≥ threshold, recovery is denied (threshold values vary by jurisdiction).

Demonstration

If a jurisdiction uses a 50% bar, a plaintiff found 49% at fault for $100,000 in damages recovers $51,000 (defendant 51% at fault), but if the plaintiff is 50% at fault recovery is typically barred.

Misapplication

Failing to apply the correct statutory threshold or allowing recovery when the plaintiff's fault equals or exceeds the jurisdictional cutoff is a misapplication; likewise, treating all modified systems as having the same cutoff is incorrect.

Consequence

Modified comparative negligence balances access to recovery with policy concerns about plaintiffs who are substantially at fault, deterring careless plaintiff conduct while preserving proportional remedies for less-blameworthy plaintiffs.

Reversal

The pure comparative approach removes the threshold and permits recovery irrespective of plaintiff fault percentage; the contributory approach removes proportional reduction and bars any plaintiff fault from recovery.

Boundary

Applies only where statutes or precedents set and recognize a specific threshold; it does not uniformly dictate how joint tortfeasors' liabilities are handled or how punitive damages interact with the threshold unless specified by law.

Semantic Tension

Tension arises between equitable allocation and administrable bright-line rules: modified systems introduce a sharp cutoff that can produce discontinuities at the threshold, in tension with proportional fairness ideals.

Synthesis

Modified comparative negligence is a middle path: proportional reductions apply up to a legislated or judicial threshold, beyond which the law withholds recovery to reflect a policy choice against compensating substantially at-fault plaintiffs.