Dear Ranjeet,
If an employee is not reporting for a long period despite reminders sent from your side, it shall be deemed that he has abandoned the job. He can be terminated without conducting a domestic enquiry also. However, to be of safer side you can follow these steps.
1. Since you have already issued two or three warning letters, you can send another letter to his permanent address and also past a copy on the notice board of the company calling on him to show cause why action including discharge should not be taken against him.
2. The letter should be so worded that it gives an impression that the employee has left/ abandoned the job and is no more interested to continue with you. The letter should direct him to explain the reasons for his absence without intimation and should caution him of the consequences which includes termination without further notice or opportunity of being heard.
3. If he does not turn up with reply, a termination letter shall be sent to the address with a copy to notice board for display.
I believe that you are working with TATA or some other big establishment. Am I wrong? If so, you may have some provisions in the Standing Orders in this regard. Please go through that and ensure if any notice is required to be given in the newspapers. Publishing show cause notice in the newspapers depends on the category of the employee and the responsibility being held by him. Normally, for managerial personnels it is always desirable to publish it so that any person who happends to deal with him shall also be cautioned of the charges levelled against such employee.
Conducting of enquiry is relevant only when he refuses the charges. If so, you can proceed with domestic enquiry.
Regards,
Madhu.T.K