Under Section 22(1) of the Industrial Disputes Act, 1947, a person employed in a public utility service shall not go on strike in breach of contract -

Section 22(1) imposes four cumulative prohibitions on strikes in public utility services: no person employed therein shall go on strike in breach of contract (a) without giving to the employer notice of strike within six weeks before striking; (b) within fourteen days of giving such notice; (c) before the expiry of the date of strike specified in such notice; or (d) during the pendency of any conciliation proceedings before a conciliation officer and seven days after the conclusion of such proceedings. A lock-out by the employer is similarly restricted under Section 22(2).