Hello Shampa Ray;
We develop a habit of mixing things unrelated to each other. Your worry is can company take action for pending work after retirement. There is no question of your clean past record. The company should not have relieved you before all pendig work is through. Even then, there is such world of work that noone can list 100% work. Hence we fiind the word 'such', at the end of any definition. Employee has equal duty to hand over and complete work before retirement. Employer may have derilicted, but employee should not refuse to cooperate. The company which has accomodated you for years together, certainly deserves your cooperation even after retirement.
Furthermore, if it was embezzling funds, responsibility is life long. If it is supression of some facts, responsibility is life long. May not be for petty matters, but for an important matter company can certainly ask the incumbant at that time. New incumbant will say he is not concerned and ex employee will say I have retired. Why the employer should suffer.
Vibhakar Ramtirthkar.