5. In regulation 6 (period of statutory paternity pay (birth)), for paragraph (4) substitute—
“(4) An employee who has made a choice in accordance with paragraph (1) may vary the date chosen provided that the employee gives the employer notice of the variation—
(a)where the variation is to provide for the employee’s statutory paternity pay period to begin on the date on which the child is born, or where he is at work on that day, the following day, at least 28 days before the first day of the expected week of the child’s birth;
(b)where the variation is to provide for the employee’s statutory paternity pay period to begin on a date that is a specified number of days (or a different specified number of days) after the date on which the child is born, at least 28 days before the date falling that number of days after the first day of the expected week of the child’s birth;
(c)where the variation is to provide for the employee’s statutory paternity pay period to begin on a predetermined date (or a different predetermined date), at least 28 days before that date,
or, if it is not reasonably practicable to give the notice at least 28 days before whichever day or date is relevant, as soon as is reasonably practicable.”.