Normally the certified Standing Orders (Service Rules, in case the establishment does not have Standing Orders) of the company will have provisions to deal with such situations. Mere overhearing the matter should not be ground for termination. You should have proof to establish that the employee has been convicted by court. Otherwise, you have to initiate disciplinary action against the employee for continuous absence from work. For that you should send a registered letter to him explaining that he has been absenting without approval of leave and should explain why action should not be taken against him for not reporting to work. He should be given enough time also. This is because, a registered letter may take 3 days to reach the destination Post Office from where an intimation is given to the address to collect the letter, the addressee can collect it within seven days only and till then the Post master is expected to keep it. That means 10 days and the acknowledgement will take another 3 days to make it two weeks!
If he doesnot turn up, you can send another letter which will also take another 14 days to make it one month. Even after that he does not turn up, you have to send a letter stating that his services will be terminated if not reported to duty within 7 days. That will again takes 21 days! Finally, you can treat him as absconding by the end of 2nd month.
If you do not follow the above procedure, your act of terminating the employee will be treated as unfair and illegal.
Regards,
Madhu.T.K