All notices and other communications required hereunder shall be in writing and shall be delivered personally or mailed by registered or certified mail, return receipt requested, or by overnight express courier service. In the case of the Participant, mailed notices shall be addressed to him or her at the home address which he or she most recently communicated to the Company in writing. In the case of the Company, mailed notices shall be addressed to the Plan Administrator, as follows: Chief Human Resources Officer, Mallinckrodt Pharmaceuticals, 675 McDonnell Boulevard, Hazelwood, MO 63042, with a copy to the Company’s general counsel, as follows: General Counsel, Mallinckrodt Pharmaceuticals, 675 McDonnell Boulevard, Hazelwood, MO 63042.