The Law on Labor Relations does not prescribe the method for determining the right to paid leave.
Requesting evidence in a case where the employee has the right to paid leave (due to important personal reasons such as the birth of a child) to confirm the justification of using paid leave is not against the provisions of the law and for the same a legal basis can be found in the form of legitimate interest.
The justification for using paid leave can be determined by inspecting a certificate that proves the important personal reason for requesting paid leave, unless otherwise determined in the collective agreement or in the internal acts of the employer.