A Third-Party Supplier Policy sets out how your company selects third-party suppliers and manages their performance in delivery of the contract.
Use of third-party suppliers or subcontractors is frequently advisable in order to deliver the services more efficiently, because they have specialist capabilities, or because it will save costs. Where third parties will be used in the delivery of the contracted services, Buyers want assurances that these third parties will be stringently vetted to ensure they have they are qualified and hold the necessary certifications and levels of insurance. Typically they will also want confirmation that the primary supplier will take responsibility for managing any subcontractors including communications and addressing any performance.
Below is a template you can modify to suit your business context and the tender requirements.