Section 24 of the Principal Act is amended by
(a) the substitution of "section 9, 12, 14, 14B, 15, 15A, 15B, 16 or 16B" for "section 9, 12, 14, 15 or 16", and
(b) the substitution of "and due to expire during the employee's absence from work on protective leave, during a period of natal care absence or during a period of absence from work to attend ante-natal classes in accordance with section 15A or for breastfeeding in accordance with section 15B shall be extended by the period of such absence" for "and due to expire during the employee's absence from work on protective leave or (as the case may require) during a period of natal care absence shall be extended by the period of absence from work on protective leave or, as the case may be, the period of natal care absence".