Enforcement Rules of Labor Union Act Article 20

When a labor union is to hold an election to fill in the vacant position of its chairperson of the board of directors, chairperson of the board of supervisors, or his (or her) substitute, it shall be held in accordance with the union charter.In case that the union charter is silent on the fill-in election referred to in the preceding paragraph, and the remaining term of service of the chairperson of the board of directors or supervisors is more than a quarter of the full term of service as stipulated in the union charter, the fill-in election shall be held within ninety days of the date when the position becomes vacant. The person so elected shall serve out the remaining of the original term of service of the chairperson of the board of directors or supervisors. If the remaining term of service is less than a quarter of the full term of service as stipulated in the union charter, the substitute for the vacant position of the chairperson shall be elected among directors or supervisors themselves. When the union charter is silent on the election of such a substitute, a fill-in election shall be held within ninety days of the date when the position becomes vacant.