Commencement of this Act ' means in relation to an establishment or employment, the date on which the Act comes into force in respect of that establishment or employment by the issue of the necessary notification under section 1(3) of the Act. 'Remuneration ' means the basic wage or salary and any additional emoluments whatsoever payable, either in cash or in kind, to a person employed in respect of employ ment or work done in such employment, if the terms of the contract of employment, express or implied, were fulfilled. 'Same work or work of a similar nature ' means work in re spect of which the skill, effort and responsibility required are the same when performed under similar 669 working conditions, by a man or a woman and the differences, if any, between the skill, effort and responsibility re quired of a man and those required of a women are not of practical importance in relation to the terms of conditions of employment.