Artikel 2

1. Contracts to which this Convention applies shall include clauses ensuring to the workers concerned wages (including allowances), hours of work and other conditions of labour which are not less favourable than those established for work of the same character in the trade or industry concerned in the district where the work is carried on—
(a) by collective agreement or other recognised machinery of negotiation between organisations of employers and workers representative respectively of substantial proportions of the employers and workers in the trade or industry concerned; or
(b) by arbitration award; or
(c) by national laws or regulations.
2. Where the conditions of labour referred to in the preceding paragraph are not regulated in a manner referred to therein in the district where the work is carried on, the clauses to be included in contracts shall ensure to the workers concerned wages (including allowances), hours of work and other conditions of labour which are not less favourable than—
(a) those established by collective agreement or other recognised machinery of negotiation, by arbitration, or by national laws or regulations, for work of the same character in the trade or industry concerned in the nearest appropriate district; or
(b) the general level observed in the trade or industry in which the contractor is engaged by employers whose general circumstances are similar.
3. The terms of the clauses to be included in contracts and any variations thereof shall be determined by the competent authority, in the manner considered most appropriate to the national conditions, after consultation with the organisations of employers and workers concerned, where such exist.
4. Appropriate measures shall be taken by the competent authority, by advertising specifications or otherwise, to ensure that persons tendering for contracts are aware of the terms of the clauses.