The Company, by action of the Compensation Committee of the Board, or the Chief Executive Officer or the Chief Human Resources Officer of the Company, to the extent authorized by the Compensation Committee of the Board, may amend the Plan, in whole or in part, at any time and from time to time. Any such amendment shall be filed with the Plan documents. No amendment, however, may be effective to reduce a Participant’s vested Account balances immediately before the date of such amendment, except that the Company may change investment funds pursuant to Section 4.2.