LEGAL PRINCIPLE: CIVIL PROCEDURE – Joinder of Parties – Test for Determining a Necessary Party
PRINCIPLE STATEMENT
The only reason which makes it necessary to make a person a party to an action is that they should be bound by the result of the action, and the question to be settled must be a question which cannot be effectually and completely settled unless they are a party.
RATIO DECIDENDI (SOURCE)
"The only reason which makes it necessary to make a person a party to an action is that he should be bound by the result of the action, and the question to be settled therefore, must be a question in the action which cannot be effectually and completely settled unless he is a party."
EXPLANATION / SCOPE
A person is a necessary party only if: (1) they should be bound by the judgment (their rights/interests will be affected); and (2) the issues cannot be effectually and completely settled without them. “Effectually and completely” means the court cannot give complete relief or fully determine the dispute in their absence. This test focuses on: whether the person’s absence would leave the dispute partially unresolved, whether their rights would be prejudiced by being bound without participation, and whether the judgment would be ineffective against them. Not every interested person is necessary—only those whose participation is essential for complete dispute resolution. This prevents unnecessary joinder while ensuring all persons whose rights are directly affected can participate and be bound. The test balances efficiency (limiting parties) against completeness (ensuring proper participation).