(3)The Central Government shall, within one month from the date of occurrence of any vacancy by reason of death, resignation or removal of the Chairperson and Members of the Appellate Tribunal and President and Members of the Tribunal and six months before the superannuation or end of tenure of the Chairperson and Members of the Appellate Tribunal and President and Members of the Tribunal, make a reference to the Selection Committee for filling up of the vacancy.