LOCATIO OPERIS, contracts. A term used in the civil law, to signify the hiring of labor and services. It is a contract by which one of the parties gives a certain work to be performed by the other, who binds himself to do it for the price agreed between them, which he who gives the work to be done promises to pay to the other for doing it. Poth. Louage, n. 392. This is divided into two branches, first, Locatio operis faciendi; and, secondly, Locatio mercium vehendarum. See these words.