Each notice relating to this Agreement shall be in writing and shall be sufficiently given if delivered by registered or certified mail, or by a nationally recognized overnight delivery service, with postage or charges prepaid, to the address hereinafter provided in this Section 12 . Any such notice or communication given by first-class mail shall be deemed to have been given two business days after the date so mailed, and such notice or communication given by overnight delivery service shall be deemed to have been given one business day after the date so sent, provided such notice or communication arrives at its destination. Each notice to the Company shall be addressed to it at its offices at 800 Gessner Road, Suite 875, Houston, Texas 77024 (attention: Chief Financial Officer), with a copy to the Secretary of the Company or to such other designee of the Company. Each notice to the Participant shall be addressed to the Participant at the Participant’s address shown on the signature page hereof.