No, there is no legal requirement for a notification period for shared parental leave.
However, employees are expected to adhere to companies’ HR policies (as per annual leave application policy) in the application of shared parental leave. This will help employers to better plan and manage business operations.
The default is to consume shared parental leave in a continuous block weeks within 12 months after your child’s birth. If there is mutual agreement between you and your employer, you may consume the leave flexibly within 12 months after your child’s birth.