"1 Requirement of equal treatment for men and women in same employment (1) If the terms of a contract under which a woman is employed at an establishment in Great Britain do not include (directly or by reference to a collective agreement or otherwise) an equality clause they shall be deemed to include one. (2) An equality clause is a provision which relates to terms (whether concerned with pay or not) of a contract under which a woman is employed (the "woman's contract"), and has the effect that- (a) where the woman is employed on like work with a man in the same employment - (i) if (apart from the equality clause) any term of the woman's contract is or becomes less favourable to the woman than a term of a similar kind in the contract under which that man is employed, that term of the woman's contract shall be treated as so modified as not to be less favourable, and (ii) if (apart from the equality clause) at any time the woman's contract does not include a term corresponding to a term benefiting that man included in the contract under which he is employed, the woman's contract shall be treated as including such a term; (4) A woman is to be regarded as employed on like work with men if, but only if, her work and theirs is of the same or a broadly similar nature, and the differences (if any) between the things she does and the things they do are not of practical importance in relation to tem1S and conditions of employment; and accordingly in comparing her work with theirs regard shall be had to the frequency or otherwise with which any such differences occur in practice as well as to the nature and extent of the differences."
"The community shall have as its task, by establishing a common market and an economic and monetary union and by implementing policies or activities…to promote throughout the community…equality between men and women"
"1. Each Member State shall ensure that the principle of equal pay for male and female workers for equal work or work of equal value is applied. 2. For the purpose of this Article, 'pay' means the ordinary basic or minimum wage or salary and any other consideration, whether in cash or in kind, which the worker receives directly or indirectly, in respect of his employment, from his employer "
"The principle of equal pay for men and women outlined in [Article 141] of the Treaty hereinafter called 'principle of equal pay' means, for the same work or for work to which equal value is attributed, the elimination of all discrimination on the grounds of sex with regard to all aspects and conditions of remuneration."
"22 That is a fortiori true since the touchstone which forms the basis of [Article 141] –that is, the comparable nature of the services provided by workers of either sex -is a factor as regards which all workers are ex hypothesi on an equal footing ..."
" 62 -The concept of worker within the meaning of Article 141 (1) EC The criterion on which Article 141 (1) EC is based is the comparability of the work done by workers of each sex (see, to that effect, case 149/77 Defrenne (No.3) [1978] ECR 1365 , paragraph 22). Accordingly, for the purpose of the comparison provided for by Article 141(1) EC, only women and men who are workers within the meaning of that article can be taken into consideration."