Section 31(1) of the Principal Act is amended by the substitution of the following paragraph for paragraph (a):
"(a) within the period of 6 months from the date on which the employer is informed of the initial circumstances relevant to the dispute, that is to say
(i) that the employee is pregnant, has recently given birth or is breastfeeding,
(ii) in the case of an employee who is the expectant father of a child, that the expectant mother of the child is pregnant, or
(iii) in the case of an employee who is the father of a child, that the child's mother has died, or".