You must show all docs on record e.g. offer letter/appointment letter,HR Policy/Service Rules and regulations mentioned in appointment letter, etc………notice of resignation/resignation submitted by you, and any reply of the company to an able labor Law Consultant/service Matters lawyer/law firm and let your counsel go thru each clause and language verbatim and advise you further after analyzing the docs,inputs by you and suggest the remedy.
Have you submitted the resignation in writing and do you have its proof of submission and acknowledgment?
You have posted the company has sent you a notice email and writing change in (service) conditions::::: Is it sent after you have supplied the notice of resignation/resignation?
You have posted that you are being paid salary:::: Are you getting salary slip every month and have you been given appointment letter and are you being provided with PF number/account slips,ESIC card,Form16::::: If yes you can establish employer-employee relationship.
Are you employed on FTC (fixed Term Contract)?
Is it stated in original appointment letter issued to you that acceptance of notice pay in lieu of notice period is subject to discretion of company or this discretion has been added later ….in email mentioned by you?
Does the employee also have such discretion if employer initiates termination::: to accept or reject notice pay in lieu of notice period? If No the contract can easily be termed arbitrary!
You are in which state and your reporting office and Redg. Office of the company is in which state?
What is this establishment: Commercial,Industrial and what is its line of biusiness e.g. IT/banking etc?
How many persons are employed in it, and in how many states it has its offices/employees?
What is your designation and nature of duties?
Employee should tender reasonable notice (say 7 days in your case), in writing by letter thry redg. Post addressed to good offices of appointing authority/MD, and mention that NO tasks are pending at his/her end…………………………and routine duties be assigned that can be completed on day to day basis within and upto LWD i.e. dated……………………..and to whom he /she should handover the charge within and upto LWD i.e. dated………under proper acknowledgment on the spot……………………and acknowledgment of notice of resignation/resignation, its acceptance,FnF statement in original (showing adjustment of CORRECT NOTICE PAY FOR CORRECT NOTICE PERIOD, Bonus,leave encashement,reimbursements, incentives,OT etc) for verification, FnF wages payment by bank DD,Form16, NOC/NDC, service certificate, relieving letter, PF number and a/c slips,ESIC card, etc be supplied within and upto last day in office i.e dated…………………
You ma reply pointwise to each point to proceed further in your query!