The interim contract is regulated in article 15 of Royal Legislative Decree 2/2015 of October 23, which approves the consolidated text of the Workers' Statute Law and article 4 of RD Royal Decree 2720/1998, of December 18, which develops article 15 of the Workers' Statute regarding fixed-term contracts.
The interim contract is the one entered into to replace a company worker with the right to reserve the job position by virtue of regulations, collective bargaining whatsapp mobile number list agreements or individual agreements, it may also be entered into to temporarily cover a job position during the selection or promotion process for its definitive coverage.
It has been, once again, the jurisprudence that has been outlining when the replacement of a worker with this type of contract lacks cause, thus interim contracts are not valid to replace a worker on voluntary leave since he only has one preferential right to return to vacancies of the same or similar category that existed or occurred in the company or during the vacation period.