Relieving Letter

I don't think you have any option. You are in a country where there is no labour law. All these IT companies exploiting their employees. They know that employees cannot do anything because there is no one in this country who could listen to the employees problem. If there voice would be listen then it will take years.

Enjoy the slavery. !!

Dear Bikram,

in the offer letter you would be having a clause saying that the changed policies from time to time will apply to the employee, and when you've received the mail had you raised an objection then it would have been a different matter.......

You was appointed on the basis of contract of services agreed by both the parties. This your service contract binding on both parties none of party has any right to change or alter this contract unilaterally. You making any change or alteration, the consent of both parties is must. Thus you are bound by your appointment letter/officer letter in which requirement of one month notice is mentioned. Merely sending email to any party does not give any authority to your employer to change the notice period. It is merely an officer not contract.