What is legal aspects of advance notice of resignation and what is the job status if want to continue after years ?

3 months and based on the law and change management procedures

Company policies and to get the gratuity from the company

for the management to be able to facilitate necessary documents and benifits of staff ending the contract. contract status End of contract

Well i beleif that there is no any retirnent age if the person want to provide his servics with his/her wish , he may be welcomed by organization .