The articles or bylaws may provide for the tenure, election, selection, designation, removal, and resignation of directors. A director should submit a written resignation letter that notes the effective date of their departure.In the absence of any provision in the articles or bylaws, the terms shall be one year. Unless the governing documents provide otherwise, boards can appoint an existing director to fill the longer term of a resigning director. However, the terms of directors of a corporation without members may be up to six years.