This excerpt taken from the NDAQ 8-K filed Aug 3, 2006.
Resignation and Removal of Officers
Sec. 7.5 (a) Any officer may resign at any time upon notice of resignation to the Board, the Chief Executive Officer, the President, or the Secretary. Any such resignation shall take effect upon receipt of such notice or at any later time specified therein. The acceptance of a resignation shall not be necessary to make the resignation effective.
(b) Any officer of the Corporation may be removed, with or without cause, by resolution adopted by a majority of the Directors then in office at any regular or special meeting of the Board or by a written consent signed by all of the Directors then in office. Such removal shall be without prejudice to the contractual rights of the affected officer, if any, with the Corporation.