Section 2(zk) in THE INDUSTRIAL RELATIONS CODE, 2020
(zk)"strike" means a cessation of work by a body of persons employed in any industry acting in combination, or a concerted refusal, or a refusal, under a common understanding, of any number of persons who are or have been so employed to continue to work or to accept employment and includes the concerted casual leave on a given day by fifty per cent. or more workers employed in an industry;
