5. (1) The Government may, with a view to bringing uniformity in the grades and scales of pay of different persons or classes of persons employed in the service of the Republic or of any public body or nationalised enterprise, by order notified in the official Gazette, prescribe grades and scales of pay and other terms and conditions of service for all or any such persons or classes of persons. (2) No persons whose grade or scale of pay is prescribed under sub-section (1) shall receive, and no person shall allow such person, any benefit of a grade or scale of pay which is higher than the grade or scale of pay prescribed for him.