lockout is a work stoppage in which an employer prevents employees from working. It is declared by employers to put pressure on their workers. This is different from a strike, in which employees refuse to work. Thus, a lockout is employers’ weapon while a strike is raised on part of employees. Acc to Industrial Disputes Act 1947, lock-out means the temporary closing of a place of employment or the suspension of work or the refusal by an employer to continue to employ any number of persons employed by him.A lockout may happen for several reasons. When only part of a trade union votes to strike, the purpose of a lockout is to put pressure on a union by reducing the number of members who are able to work.
For example, if a group of the workers strike so that the work of the rest of the workers becomes impossible or less productive, the employer may declare a lockout until the workers end the strike. Another case in which an employer may impose a lockout is to avoid slowdowns or intermittent work-stoppages. Occupation of factories has been the traditional method of response to lock-outs by the workers' movement.