Any right, power, duty, function, discretion, or authority that may be exercised or performed by the Minister of Labour under this Act may also be exercised, at any time and in his own name, by the Minister of Employment or the Minister of Immigration severally; and, where any such light, power, duty, function, discretion, or authority is so exercised or performed by the Minister of Employment or the Minister of Immigration, all the provisions of this Act that would apply in respect thereof if that right, power, duty, function, discretion, or authority had been exercised or performed by the Minister of Labour shall apply (with all necessary modifications) in respect thereof as if every reference in those provisions to the Minister of Labour were a reference to the Minister of Employment or the Minister of Immigration, as the case may be.”