13.—(1) Where for any week or part of a week a woman does no work because there is, within the meaning of section 19 of the 1975 Act a stoppage of work due to a trade dispute at her place of employment the continuity of her employment shall, subject to paragraph (2), be treated as continuing throughout the stoppage but, subject to paragraph (3), no such week shall count in the computation of her period of employment.
(2) Subject to paragraph (3), where during the stoppage of work a woman is dismissed from her employment, the continuity of her employment shall not be treated in accordance with paragraph (1) as continuing beyond the commencement of the day she stopped work.
(3) The provisions of paragraph (1) to the extent that they provide that a week in which a stoppage of work occurred shall not count in the computation of a period of employment, and paragraph (2) shall not apply to a woman who proves that at no time did she have a direct interest in the trade dispute in question.