(98)It is essential that award criteria or contract performance conditions concerning social aspects of the production process relate to the works, supplies or services to be provided under the contract. In addition, they should be applied in accordance with Directive 96/71/EC, as interpreted by the Court of Justice of the European Union and should not be chosen or applied in a way that discriminates directly or indirectly against economic operators from other Member States or from third countries parties to the GPA or to Free Trade Agreements to which the Union is party. Thus, requirements concerning the basic working conditions regulated in Directive 96/71/EC, such as minimum rates of pay, should remain at the level set by national legislation or by collective agreements applied in accordance with Union law in the context of that Directive. Contract performance conditions might also be intended to favour the implementation of measures for the promotion of equality of women and men at work, the increased participation of women in the labour market and the reconciliation of work and private life, the protection of the environment or animal welfare and, to comply in substance with fundamental International Labour Organisation (ILO) Conventions, and to recruit more disadvantaged persons than are required under national legislation.