It is advisable to engage the person as a consultant with a fixed remuneration and detailed agreement incorporating terms and conditions should be entered into with the retired employee.
The content of the application as written by retired employee can be as under:-
Subject: Engagement as a consultant
Wish to inform that I got retired from the services of the organization on attaining age of________years as per retirement policy prevailing in the organization. Though I am hale and hearty and can continue to give my valuable services to the organization and transfer the rich experience I had gained during the course of my employment in the interest of the organization.
I hope you will be kind enough to concede my request positively.
10th February 2014 From India