Principle: Strike is a collective stoppage of work by workmen undertaken in order to bringpressure upon those who depend on the sale or use of the products of work: whereas, lock-out isa weapon in the hands of the employer. similar to that of strike in the armoury of workmen. usedfor compelling persons employed by him to accept his terms or conditions of or affectingemployment. While in closure there is permanent closing down of a place of employment or partthereof, in lay-off an employer. who is willing to employ, fails or refuses or is unable to provideemployment for reasons beyond his control.Facts: Workmen of a textile factory went on strike as per law, demanding the payment of bonus.Employer of the factory refused to pay any extra allowances, including bonus. and besides heclosed down the factory till the strike was stopped.

• A. Act of closing down the factory by the employer amounted to strike
• B. Act of closing down the factory by the employer amounted to lay-off
• C. Act of closing down the factory by the employer amounted to lock-out
• D. Act of closing down the factory by the employer amounted to closure