law: Right to Fair Compensation and Transparency in Land Acquisition, Rehabilitation and Resettlement Act, 2013 
  57.
  
   Salary and allowances and other terms and
  
  conditions of service of Presiding Officers.
  The salary and
  
  allowances payable to and the other terms and conditions of service (including
  
  pension, gratuity and other retirement benefits) of the Presiding Officer of an
  
  Authority, shall be such as may be prescribed:
  Provided that neither
  
  the salary and allowances nor the other terms and conditions of service of the
  
  said Presiding Officers shall be varied to their disadvantage after
  
  appointment.