Art. 643.Solidary Obligees and Obligors; Joinder

Louisiana law recognizes solidary obligations — situations where more than one person owes the same debt in full, or more than one person is owed the same debt in full, rather than each holding only a fractional share. A landlord and a co-signer who are both on the hook for the whole rent owed under a lease are solidary obligors; two people who together are owed the full amount of a single debt are solidary obligees. Ordinary joint ownership, where each person holds only a divided share, works differently.

Article 643 cuts through what could otherwise be a joinder headache. Because any one solidary obligee can already demand the whole performance on their own, and any one solidary obligor can already be made to render the whole performance, the article confirms that a lawsuit does not need every solidary obligee as a plaintiff or every solidary obligor as a defendant. One creditor can sue to collect the whole debt; a plaintiff can sue just one debtor for the whole amount owed, leaving that defendant to seek contribution from the others separately if the law allows it.

This is an exception to the general joinder analysis in Articles 641 and 642, not a repeal of it. It exists because the nature of a solidary obligation already makes each solidary party capable of standing in for the whole debt or the whole right.