All notices under this Agreement shall be in writing and shall be deemed effective when delivered in person (in the Company's case, to its Secretary) or 48 hours after deposit thereof in the U.S. mails, postage prepaid, addressed, in the case of the Employee, to his last known address as carried on the personnel records of the Company and, in the case of the Company, to the corporate headquarters, attention of the Secretary, or to such other address as the party to be notified may specify by written notice to the other party.