Contractor is directed to review, fill out and execute the Public. Works Contractor Registration Certification attached hereto as Exhibit "E" prior to contract.This Agreement is made and entered into as of. The CONTRACTOR shall complete the work described in the Contract Documents for this project. Sample Independent Contractor Agreement. This Agreement is for the benefit of the County and the Agency. While variations differ from country to country, this classification of worker typically covers all contractors, freelancers, and sole business owners.