(1) Nothing in this Act renders unlawful anything done by a person if it was
necessary for the person to do it in order to comply with a requirement of--
(a) any other Act, whether passed before or after this Act,
(b) any
regulation, ordinance, by-law, rule or other instrument made under any such
other Act,
(d) an order of any court, not
including an order or award of a court or tribunal having power to fix minimum
wages and other terms and conditions of employment, or
(3) Except as provided
in this section, this Act has effect notwithstanding anything contained in--