appropriate Government” mean

(a) “appropriate Government” means,—
(i) in relation to—
(1) any establishment pertaining to any industry carried on by or under the authority of
the Central Government or pertaining to any such controlled industry as may be specified
in this behalf by the Central Government; or
(2) any establishment of any railway, Cantonment Board, major port, mine or oil-field; or
(3) any establishment of a banking or insurance company,
the Central Government;
(ii) in relation to any other establishment, the Government of the State in which that
other establishment is situated;