Section 3

A person to whom salary is payable under this Act or for whose salary as the holder of any other office provision is made by any other written law shall be entitled to receive only one such salary, but if he is the holder of two or more offices in respect of which salary is so payable and there is a difference in the salaries payable in respect of those offices, the office in respect of which salary is payable to him shall be that in respect of which the highest salary is payable.