law: The Small Industries Development Bank of India Act, 1989 
  9. Vacation and resignation
  
  of office by Directors 
  1.     
  
    If
  
  a Director-
  a.     
  
    Becomes
  
  subject to any of the disqualifications mentioned in section 8 or
  b.    
  
    Is
  
  absent without leave of the Board for three or more consecutive meetings
  
  thereof, His seat shall thereupon become vacant.
  1.     
  
  
  2.     
  
    Any
  
  Director may resign his office by giving notice thereof in writing to the
  
  authority that nominated him and on his resignation being accepted by such
  
  authority or if his resignation is not sooner accepted, on the expiry of three
  
  months from the receipt thereof by such nominating authority, he shall be
  
  deemed to have vacated his office.