Leave to take care of a child up to 6 years of age cannot be extended without a medical certificate, so if an employee plans to extend its term, he must submit an appropriate application and a new medical opinion.
In most cases, the validity period of the certificate in the form No. 080-1/o is 6 months. If after the end of this period the child still needs care, a new medical opinion is issued. It must be received in a timely manner and submitted to the employer together with the application for the extension of leave for care from 3 to 6 years.