Any notice or filing required or permitted to be given to the Plan administrator or the Committee under the Plan shall be sufficient if in writing and hand delivered, or sent by registered or certified mail, to the Human Resources Department, or to such other entity as the Plan administrator or the Committee may designate from time to time. Such notice shall be deemed given as to the date of delivery, or, if delivery is made by mail, as of the date shown on the postmark on the receipt for registration or certification.