2. The methods to be followed in this appraisal may be decided upon by the authorities responsible for the determination of rates of remuneration, or, where such rates are determined by collective agreements, by the partíes thereto. 3. Differential rates between workers which correspond, without regard to sex, to differences, as determined by such objective appraisal, in the work to be performed shall not be considered as being contrary to the principle of equal remuneration for men and women workers for work of equal value. A RTICLE 4 Each Member shall co-operate as appropriate with the employers' and workers' organisations concerned for the purpose of giving effect to the provisions of this Convention. A RTICLE 5 The formal ratifications of this Convention shall be communicated to the Director-General of the International Labour Office for registration. A RTICLE 6 1. This Convention shall be binding only upon those Members of the International Labour Organisation whose ratifications have been registered with the Director-General. 2. It shall come into force twelve months after the date on which the ratifications of two Members have been registered with the Director-General. 3. Thereafter, this Convention shall come into force for any Member twelve months after the date on which its ratification has been registered. A RTICLE 7 1. Declarations communicated to the Director-General of the International Labour Office in accordance with paragraph 2 of Article 35 of the Constitution of the International Labour Organisation shall indicate -a) the territories in respect of which the Member concerned undertakes that the provisions of the Convention shall be applied without modification; b) the territories in respect of which it undertakes that the provisions of the Convention shall be applied subject to modifications, together with details of the said modifications; c) the territories in respect of which the Convention is inapplicable and in such cases the grounds on which it is inapplicable; d) the territories in respect of which it reserves its decision pending further consideration of the position. 2. The undertakings referred to in subparagraphs (a) and (b) of paragraph 1 of this Article shall be deemed to be an integral part of the ratification and shall have the force of ratification. 2 ILO Equal Remuneration Convention, (1951) No. 100

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