This Agreement, together with Exhibit A , constitutes and expresses the entire agreement of the Parties with respect to Employer’s employment of Employee, and there are no representations, inducements, promises, agreements, arrangements, or undertakings oral or written, between the Parties other than those set forth herein and therein. Any and all prior agreements or understandings with respect to such matters are hereby superseded. No modification or amendment of this Agreement, nor waiver of any of its provisions, shall be valid or enforceable unless in writing and signed by both Parties.