Code of Civil Procedure Article 56-1

Wherever a claim must be adjudicated jointly with regard to several persons, and they shall join as indispensable plaintiffs to initiate the action, but if one or some of them refuse to join as co-plaintiffs without giving a justifiable reason, the court may, on plaintiff's motion, order by a ruling such persons to join within a designated period of time. If such persons fail to join, they shall be deemed to have joined as co-plaintiffs.The court shall afford any persons refusing to join an opportunity to be heard, prior to making its ruling in accordance with the provision of the preceding paragraph.In accordance with the provision of the first paragraph, wherever the whereabouts of an indispensable person is unknown and that person has not joined in the litigation action, and the plaintiff has moved for joinder of such person, if the court considers such motion just, it may join said person as a co-plaintiff. Notwithstanding, the court may revoke the original ruling where the joined plaintiff submits reasons for refusing to join as a co-plaintiff prior to the first oral-argument session and the court considers such reasons just.An interlocutory appeal may be taken from the rulings provided in the first and the preceding paragraph. In cases provided in the first and third paragraphs, if plaintiffs shall bear the litigation expenses, the court may, in its discretion, order only those plaintiffs who initially initiated the action to bear such expenses.