Clause 5 defines a ‘nominated Subcontractor’ as either a Subcontractor who is stated in the Contract as being ‘nominated’; or who the Engineer instructs the Contractor to employ as a Subcontractor under clause 13. The Contractor may object to employing a nominated Subcontractor. A number of grounds are deemed to be reasonable for objecting and these include: where there are reasons to believe that the Subcontractor does not have sufficient resources, competence or financial strength to complete the subcontracted works; where the Subcontractor refuses to agree to indemnify the Contractor for any negligence; or where the Subcontractor does not agree to carry out the works so as not to put the Contractor in breach of its own obligations. If the Employer requires that the Contractor employ a nominated Subcontractor where a reasonable objection has been made then it must agree to indemnify the Contractor. The Contractor is required to pay to the nominated Subcontractor the amounts which the Engineer certifies to be due in accordance with the Subcontract. This sum is then added to the Contract Price as well as any amount for overheads and profit as stated in the appropriate schedule or Appendix to Tender. However, before issuing a Payment Certificate to the Contractor the Engineer may ask for evidence that previous payments have been made to the nominated Subcontractor. If evidence is not provided by the Contractor or the Contractor does not satisfy the Engineer that there are grounds for withholding payment then the Employer may at his discretion pay the nominated Subcontractor directly.