(1) A strike or lock-out shall be illegal, if it is---
(i) commenced or declared in contravention of section 62; or
(ii) continued in contravention of an order made under sub-section (7) of section 42.
(2) Where a strike or lock-out in pursuance of an industrial dispute has already commenced and is in existence at the time of the filing of the application relating to such industrial dispute in the Tribunal or of the reference of such industrial dispute to an arbitrator or a National Industrial Tribunal, the continuance of such strike or lock-out shall not be deemed to be illegal, provided that such strike or lock-out was not at its commencement in contravention of the provisions of this Code or the continuance thereof was not prohibited under sub-section (7) of section 42.
(3) A lock-out declared in consequence of an illegal strike or a strike declared in consequence of an illegal lock-out shall not be deemed to be illegal.