45. Illegal strikes and lock-outs.

(1) A strike or a lock-out shall be deemed to be illegal if -

(a) it is declared or commenced or continued in contravention of section 43 or section 44 or of any provision of any other written law; or

(b) it has any other object than the furtherance of a trade dispute -

(i) between the workmen on strike and their employer; or

(ii) between the employer who declared the lock-out and his workmen.

(2) A lock-out declared in consequence of an illegal strike or strike declared in consequence of an illegal lock-out shall not be deemed to be illegal.