In defence service the superannuation age for serving soldiers is 56 years.
Likewise you can ask your employer to give a certificate certifying that you have retired at the age of 56 years which is considered as superannuation as per company rules.
or let him allow you to continue to work till you attain 58 years of age if the employment offer letter and the service conditions permit you to work till 58 years of age.
You create all these and secure them as evidence which may be useful to you at a later stage if you propose to file a writ petition in high court seeking the desired relief