In this comprehensive guide, we'll delve into the key aspects of agreements, their types, essential components, and best practices. The Contractor Vendor Agreement establishes the specifications, terms, and conditions needed before hiring a contractor.PMI requires all vendors to complete the following forms prior to commencing work for PMI. They are in the office and on the company web site. The Vendors Manual is published under the authority of 2.21111 of the Code of Virginia. Its purpose is to set. Both parties must sign for the agreement to be considered legally binding. Competitive sealed bidding for a firm fixed price contract is the preferred method of contracting. And authorized to do business in the Commonwealth of Virginia. The Contractor shall be paid its costs, including contract close-out costs, on work performed up to the time of termination.