The workers will no longer be required to provide a medical certificate to their employers.

https://elderecho.com/los-trabajadores-no-tendran-que-entregar-a-la-empresa-el-parte-de-baja#:~:text=Los%20trabajadores%20que%20temporalmente%20est%C3%A9n,Consejo%20de%20Ministros%20de%202022.

On April 1, the regulations establish that workers will no longer be required to provide a medical certificate to their employers when they are sick. This change will simplify the process of obtaining sick leave, and will eliminate the need for workers to disclose their health status to their employers. However, it is important to note that employees will still be required to inform their employers about their absence due to illness in a timely manner. Overall, this change is a positive development for workers, because it reduces bureaucracy, and streamlines administrative procedures more efficiently.