RULE 2
Cause of Action
Section 1. Ordinary civil actions, basis of. — Every ordinary civil action must be based on a cause of action. (n)
Section 2. Cause of action, defined. — A cause of action is the act or omission by which a party violates a right of another. (n)
Section 3. One suit for a single cause of action. — A party may not institute more than one suit for a single cause of action. (3a)
Section 4. Splitting a single cause of action; effect of. — If two or more suits are instituted on the basis of the same cause of action, the filing of one or a judgment upon the merits in any one is available as a ground for the dismissal of the others. (4a)
Section 5. Joinder of causes of action. — A party may in one pleading assert, in the alternative or otherwise, as many causes of action as he may have against an opposing party, subject to the following conditions:
(a) The party joining the causes of action shall comply with the rules on joinder of parties;
(b) The joinder shall not include special civil actions or actions governed by special rules;
(c) Where the causes of action are between the same parties but pertain to different venues or jurisdictions, the joinder may be allowed in the Regional Trial Court provided one of the causes of action falls within the jurisdiction of said court and the venue lies therein; and
(d) Where the claims in all the causes action are principally for recovery of money, the aggregate amount claimed shall be the test of jurisdiction. (5a)
Section 6. Misjoinder of causes of action. — Misjoinder of causes of action is not a ground for dismissal of an action. A misjoined cause of action may, on motion of a party or on the initiative of the court, be severed and proceeded with separately. (n)