Hi, if employee is absent without information or and have not any communication regarding his/her sickness with Employer/Boss/ Senior HR for days, and then why not employee be treated as “absconded”. You say how employer knows about the situation and the reality; therefore, you can certainly take action but by following the “Termination Procedure”, which is a demand of these kind of situations /acts as per the terms and rules laid down under Employment Letter.
Generally, when any employee found absent from job without any information for many days, employer adopt a procedure which permit them to issue a warning latter to employee first to report back with a valid reason of the act/leave without information, and if employee never respond, they can terminate the employee as per the procedure and T&Cs
In this case, of “Termination” (violation of rules by employee, specified under the mutual agreement “Employment /Appointment/Joining Letter” signed by both parties; Employee & Employer), there no employee can claim salary for “Notice Period*” or it is not applicable.
However, if employer retrenches any employee due to any uncertain conditions/situation or related reason, compensate the loss of employment to employee by paying Notice Period* Salary.
* For more, you need to go through the terms & conditions you are using with appointment/joining letters in your organization.