Notwithstanding anything contained in this Act, the provisions of this Act mentioned in the third column of the Schedule shall not apply to the establishment, employees and other persons mentioned against them in the second column of the said Schedule:

Provided that the Government may, by notification published in the Official Gazette, add to, omit or alter any of the entries of the said Schedule, and on the publication of such notification, the entries in either column of the said Schedule shall be deemed to be amended accordingly.