Compensation for Additional Services Additional Services shall be compensated as set forth on Exhibit A for the stipulated payment amounts set forth therein. Other Additional Services not set forth on Exhibit A that are required or requested by the Owner shall be compensated as agreed, using the methodology set forth on Exhibit A, prior to the Design Professional undertaking such Additional Services; provided, however, that if such compensation cannot be agreed, the Additional Services shall be performed at the hourly rates set forth and listed in Exhibit B, plus reimbursable expenses pursuant to Article 4.1.3 below, with a limitation as to maximum amount specified.
Additional Service 4.1 You shall be responsible to pay the Representative for the provision of a Service. 4.2 Additional service or variations in the Service may be required after the date of execution of this Agreement and may be performed upon our prior written approval. Such written approval shall be evidenced by a change authorisation order (“Change Order”) or such other written authorisation as approved and signed by the Contact or a duly authorised Public Officer. In such case, a Change Order shall be issued within a reasonable time thereafter. 4.3 All Change Orders are subject to the terms and conditions of this Agreement. 4.4 The Fee for additional service shall be agreed by us in writing prior to any additional service being performed.