Four systems, and North Dakota uses the stricter modified threshold
American fault law splits into four real categories: pure comparative negligence, modified comparative negligence with a 50% bar, modified comparative negligence with a 51% bar, and pure contributory negligence. North Dakota uses the 50% bar under NDCC § 32-03.2-02 — the stricter of the two modified thresholds nationally.
The 50/51 distinction, precisely
A claimant found exactly 50% at fault recovers nothing in North Dakota, because the statute bars recovery once fault is "as great as" the combined fault of everyone else. In a 51%-bar state, that same claimant at exactly 50% would still recover half their damages, since their fault wouldn't yet exceed the other side's.
A rule that replaced something far harsher
Before the North Dakota Legislature enacted comparative negligence in 1973, the state followed a pure contributory negligence rule — the same harsh, all-or-nothing standard still used today in just five US jurisdictions. Under that older rule, even 1% fault by the plaintiff barred recovery entirely. The 1973 legislation, later recodified as NDCC Chapter 32-03.2, was specifically designed to eliminate that inequity by shifting the bar from 1% fault to 50%.
Still, a comparatively strict modified system today
Even after that reform, North Dakota remains on the stricter end of the modified comparative spectrum. A pure comparative negligence state like California never bars recovery for ordinary fault at all, no matter how high the percentage. North Dakota, by contrast, cuts a claimant off the moment their fault reaches the halfway mark.
A separate rule that doesn't change this core framework
North Dakota's distinctive two-party motor vehicle accident property damage rule, under NDCC § 32-03.2-02.1, operates as a separate allocation mechanism layered on top of this general 50% bar — it doesn't replace or change the underlying four-system classification. See our full guide to that two-party auto accident rule for how it works.