Here let us see the final stages of completion of a contract.
You should closely monitor the performance of the consultant. This could be done by keeping track of the submission of deliverables. The reports submitted by the consultants should be reviewed by a specially constituted review committee which will review and forward the approval/comments (soon after the receipt of the same) to the consultant for compliance and resubmission if needed.
You can amend the contract promptly as mutually agreed by modifications in the TOR, or scope of work or contract value.
You can make sufficient effort to resolve the disputes amicably. Unresolved disputes shall be treated as per provisions in the contract.
In case of poor performance by one or more or all of the key staff of the consultant, you can take action as per provisions in the contract. You should not allow poor performance to continue beyond a certain point and inform the consultant so as to improve the performance and/or replace the key staff member(s) as per contract. If the consultant does not comply or improve his performance adequately, you can terminate the contract.
In case the consultant is unable to complete the assignment within the stipulated period due to any reason what so ever, the consultant should requests for extension of time and or increase in cost. You should review the request immediately and if satisfied with the request, you can amend the contract either by increasing the cost or extension of time.
Completion of Assignment:
You should review the draft deliverables/outputs as per contract and promptly communicate approval/comments to the consultants. The consultants should promptly comply with the comments without extra cost and submit the final deliverable/output. After receipt the same, final payments should be made and the contract is closed.