The industrial tribunal convenes a general meeting under the conditions set out in article R. 1423-23 to elect a new chairman or a new vice-chairman when one of these offices becomes vacant for one of the following reasons:
1° Refusal of the chairman or vice-chairman to be installed;
2° Resignation;
3° Declaration of resignation in application of articles L. 1442-12 and D. 1442-18 ;
4° Death;
5° Disqualification for disciplinary reasons pronounced by decree in application of article L. 1442-14 ;
6° Disqualification by operation of law in application of article L. 1442-15.