The case behind the rule: two drinking drivers
The real facts of McIntyre v. Balentine are worth knowing. On a November night in 1986, Harry McIntyre and Clifford Balentine collided on a Tennessee highway. Both men had been drinking: McIntyre's blood alcohol level was measured at .17 percent, and there was evidence Balentine was speeding. A jury found them equally at fault, and under the old contributory negligence rule then in place, that finding would have barred McIntyre's recovery completely. The Tennessee Supreme Court used this case to replace that all-or-nothing rule with the modified comparative fault system Tennessee still uses today.
A genuinely important, lesser-known rule: fault without a defendant
Here's a real wrinkle worth understanding. Tennessee courts have held that fault can be allocated to a tortfeasor who is immune, or effectively immune, from liability — not just to the parties the plaintiff is actually suing. This might include, for example, someone protected by a specific statutory immunity.
Why this genuinely affects what a plaintiff actually recovers
Because Tennessee's system links liability closely to a defendant's own percentage of fault, and because fault can be allocated to an immune party who contributes nothing to any judgment, a plaintiff's total recovery can shrink even when every named defendant is found fully liable for their own share. The immune party's percentage is still subtracted from the whole, even though the plaintiff has no realistic way to collect anything from that party directly.
A real procedural mechanism for additional parties
T.C.A. § 20-1-119 provides a specific mechanism in Tennessee comparative fault cases: when a defendant identifies another potentially at-fault party, the plaintiff generally gets an opportunity, within certain procedural limits, to add that party to the lawsuit — a real statutory response to how closely Tennessee ties recovery to a complete and accurate fault allocation.
Who ultimately decides
If a case goes to trial, the jury apportions fault among all the relevant parties — named defendants, the plaintiff, and, where applicable, immune or otherwise unavailable parties. In the far more common scenario of a negotiated settlement, the parties and their insurers effectively work out this same comparison between themselves. See our Tennessee comparative negligence calculator to see how sharply the outcome changes right at the 50% line.