It appears that in October,1967,Subbammal,respondent No.2 herein,who is a woman worker employed in Mount Stuart Estate (hereinafter referred to as 'the establishment'),which is carrying on plantation industry,was allowed leave of absence by the establishment on the basis of a notice given by her of her expected delivery which actually took place on December 16,1967.After her delivery,the respondent was paid by her employers on account of maternity benefit an amount equivalent to what she would have earned on the basis of her average daily wage in 72 working days falling within twelve week's of the maternity period