law: The Actuaries Act, 2006
  18. Resignation from
  
  membership and filling up of casual vacancies. - 
  1. 
  
   Any
  
  member of the Council may at any time resign his membership by writing under
  
  his hand addressed to the President, and the seat of such member shall become
  
  vacant when such resignation is accepted and notified by the Council.
  2. 
  
   A
  
  member of the Council, other than a member nominated under clause (b) of
  
  sub-section (2) of section 12 shall be deemed to have vacated his seat if he is
  
  declared by the Council to have been absent without sufficient reason from
  
  three consecutive meetings of the Council, or of any of the Committees
  
  constituted by the Council, and of which he is a member or he has been found
  
  guilty of any professional or other misconduct and awarded penalty of fine or if
  
  his name is, for any cause, removed from the register under the provisions of
  
  sections 24 and 30.
  3. 
  
   A
  
  casual vacancy in the office of a member of the Council shall be filled by
  
  fresh election or by nomination by the Central Government, as the case may be,
  
  and the person elected or nominated to fill the vacancy shall hold office only
  
  for the remainder of the term for which the member in whose place he was
  
  elected or nominated would have held that office: Provided that no election
  
  shall be held to fill a casual vacancy occurring within one year prior to the
  
  date of the expiration of the term of such member.
  4. 
  
  
  
   No
  
  act done by the Council shall be called in question on the ground merely of the
  
  existence of any vacancy in, or defect in the constitution of the Council.