Dear Lipak-Kumar,
This is against the law. Leaves is mandatory as per labour laws, but it may vary state to state. (The Factories Act of 1948 stipulates that each worker or employee who has worked a least 240 days in a calendar year is entitled to 12 working days of paid leave or annual leave. For adult and juvenile employees, paid or earned leave time durations vary (under the age of 15 years).
Kindly share the details of the company i will talk to distt. Labour Enforcement Officer/
Labour Commissioner regarding the same.