Is there any minimum no of employee required for Bonus Act ?

Mr. Jha, Please check this may be this would be your answer.

Short title, extent and application.—(1) This Act may be called the Payment of Bonus Act, 1965.
(2)  It extends to the whole of India [* * *]².
(3)  Save as otherwise provided in this Act, it shall apply to —

(a)  every factory; and
(b)  every other establishment in which twenty or more persons are employed on any day during an accounting year.

Source Link > https://labour.up.nic.in/labourcommissioner/payofbons65.htm

Ya its 20

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