N.C. Gen. Stat. § 55-8-07: Resignation of directors.

(a) A director may resign at any time by communicating his resignation to the board of directors, its chair, or the corporation.

(b) A resignation is effective when it is communicated unless it specifies in writing a later effective date or subsequent event upon which it will become effective. (1955, c. 1371, s. 1; 1959, c. 1316, s. 34; 1973, c. 469, s. 7; 1989, c. 265, s. 1; 2001-358, s. 6(c); 2001-387, ss. 173, 175(a); 2001-413, s. 6.)