Section 52A(2) in The Employees' State Insurance Act, 1948
(2)(i)Where the Central Government or a State Government, as the case may be, adds any description of employment to the employments specified in Schedule III to the Workmens Compensation Act, 1923 (8 of 1923), by virtue of the powers vested in it under sub-section (3) of section 3 of the said Act, the said description of employment and the occupational diseases specified under that sub-section as peculiar to that description of employment shall be deemed to form part of the Third Schedule.(ii)Without prejudice to the provisions of clause (i), the Corporation after giving, by notification in the Official Gazette, not less than three months notice of its intention so to do, may, by a like notification, add any description of employment to the employments specified in the Third Schedule and shall specify in the case of employments so added the diseases which shall be deemed for the purposes of this section to be occupational diseases peculiar to those employments respectively and thereupon the provisions of this Act shall apply, as if such diseases had been declared by this Act to be occupational diseases peculiar to those employments.