Dear Rahul,
Your post contains a lot of words which are very confusing and the attachment is also not available.
What do you mean by compulsory retirement order? Is it a termination order? Then okay.
Now, against the order of termination, the employee moved the concerned authority who also upheld the decision whereas the Chairman and managing Director rejected the order and ordered for reinstatement of the employee. After reinstatement he was asked to submit resignation again on 19-12-1998. Since the first resignation was not accepted and rejected due to disciplinary action, he should submit a fresh resignation, anyway. This is because in between there was a termination of employment and then a reinstatement. Then, after reinstatement, he is an employee and if he wants to get relieved, he should again submit a resignation.
You wrote that "Letter of 19.12.98 can not treated as resignation as he was not inservice 9n this date and he was seeking permission.to resign as per officer service regulations where its required that during disc proceedings pendency one has to take prior permission in writing before resigning". Why the same cannot be taken as a resignation? You have said that "filed review beforw cmd which was allowed and officer was reinstated back into services." That means he was reinstate in service.
Only things is that his second letter (resignation) was dated before the reinstatement. That resignation was following the inducement by the management of the bank. Therefore, the same is invalid. The officer can approach the same CMD for assistance.
This seems to be an old issue, perhaps something happened some 24 years back and I am afriad you are still behind the technicalities of the issue.