1. Consultant's Services. Coordination of Services -- Harris agrees to work closely with Organization staff in the performance of Services and shall be available to Organization's staff,.A Consulting Agreement is a written contract that outlines the terms and conditions of a professional service. A sample contract for consulting services. Services of the Consultant. The Consultant shall devote up to 20 hours per month. Who will he or she report to at your company? Texas Limited Sales Tax. Exemption Certificates will be furnished upon written request to the Harris County Purchasing Agent.