Dear Nany,
The notice period is completer discretion of the management of the company. This the part of the service agreement signed between the employer and employee at the time of joining the services. Once it is accepted by the employee it is seen as mutual agreement on this condition.
Similarly, as far as I know , if the company tends to change the earlier notice period as a policy change then all those employees are expected to be taken into confidence who are supposed to be facing changes in the notice period which they agreed upon at the time of joining.
The notice period is completer discretion of the management of the company. This the part of the service agreement signed between the employer and employee at the time of joining the services. Once it is accepted by the employee it is seen as mutual agreement on this condition.
Similarly, as far as I know , if the company tends to change the earlier notice period as a policy change then all those employees are expected to be taken into confidence who are supposed to be facing changes in the notice period which they agreed upon at the time of joining.