Dear Gopal,
As per your query, Gratuity and Provident Fund are two separate things.
Gratuity: An employee is eligible for Gratuity only if he completes the period of continuous service for 5 years in a same organisation. Gratuity is also known as "Loyalty Bonus".
So it has no thing do do with whether PF is getting deducted or not.
If you complete a tenure of 5 years of continuous service in same organisation, then you are eligible for Gratuity, as per Payment of Gratuity act 1972.
Hope resolved your query.
Regards
Rajesh Kumar Pradhan (HR)
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