dear friend,
1) It is not about the companies, whether it is IT or some other organisation, each and every employee under the purview of the rules and regulations should comply with certain facts for the benefits of the organisation and for the benefits of self. They must follow certain laid down rules in employment. An inquiry is mandatory before terminating an employee, because, prima facie, we must prove the employee committed certain things against the integrity of him, created a black mark to the organisation, untrustworthy of the senior, thus we cannot immediately terminate any employee without thoroughly investigating. However, certain activities like untrustworthy activities of selling our product and its flavours, stealing information and selling to the rivals, killing of a colleague, house hold grave damages for mental and physical assaults, abandoning training before taken into the company role, will attract immediate suspension and termination..or till pendency of court verdict, etc., every thing rest with the organisation and control...
2) If an employee stop coming into office..say absconding..send a notice first to report to duty, to report within a 15 days time, again send another letter giving one week time, later send legal notice for absconding without information... latter conduct an enquiry ex-post facto in absence of the individual terminate him and put it in the company notice, inform the authorities with legal consequences stopping pay and allowances, pf authorities etc.,...better putting him under suspension will not yield result as the employee already absconded... Never, worry if he fail to receive your legal notice at the address declared by the employee, put it in local newspaper and take action... if this too you do not want to do.. stop pay and allowances and wait...
3)please do follow point 2 ..
4) do as in para-2, and you can initiate police complaint etc., if the employee had important charges in the organisation having very important records withheld with him...hope you might have not done and spare such employee..
Best wishes...