Rule 30.Misjoinder and Nonjoinder of Parties
Current through June 1, 2026 · Last verified July 11, 2026
Full Text of Rule 30
Amendment History
[CCP 12/2/78]
Plain-English Summary
Rule 30 is a curative rule — it keeps joinder mistakes from sinking an otherwise sound case. If a party was joined who should not have been (misjoinder), or if someone who should have been a party was left out (nonjoinder), that alone is not a ground to dismiss the action. Instead, the court can add or drop parties by order, on motion by any party or on the court’s own initiative, at any point in the case, on whatever terms are just.
The rule also allows severance: any claim against a party can be split off and proceeded with separately. That gives a court room to keep a case moving against the parties who belong in it while handling a misjoined party’s claim on its own track, rather than forcing an all-or-nothing outcome.
Frequently Asked Questions
Can a case be dismissed just because the wrong person was named as a party?
No. Rule 30 states that misjoinder of parties is not a ground for dismissal of an action.
Who can ask the court to add or drop a party from a case?
Rule 30 allows parties to be dropped or added by order of the court on motion of any party, or on the court’s own initiative, at any stage of the action.
Can a claim against one defendant be separated out and handled on its own?
Yes. Rule 30 allows any claim against a party to be severed and proceeded with separately.
Is there a deadline for fixing a misjoinder or nonjoinder problem?
No. Rule 30 allows the court to add or drop parties at any stage of the action, on such terms as are just.