The resignation is effective without acceptance when the notice is given to the corporation. This article discusses some strategies that executives, professionals, and salespersons can use to minimize the risk of a lawsuit.In case of resignation of a director or vacancy in a director position, the Board of Directors shall fill such vacancy for the unexpired term of such director. A Director may participate in the voting for his or her successor. The short answer is yes, the chair could withdraw his resignation and submit it at a later date.