21. A notice of termination of employment given in respect of an employee or a suspension from employment imposed on an employee—

(a) before the employee commences a period of paternity leave, or

(b) before the receipt by the employee’s employer of a notification in accordance with subsection (2) or (5) of section 7 , section 11(1), 12(5), 13(2), 14(2), 15(3) or, where appropriate, under section 24 ,

and due to expire during the employee’s absence from work on the leave concerned shall be extended by the period of such absence.