Dear Suchita D,
Can you please provide us with more information about the situation? What was the desired level of performance? When was it communicated to the employee concerned, and how was it communicated? When did the authorities discover the underperformance of the employee? Was the employee informed of the consequences of underperformance, and if yes, how was it communicated? Was it a warning letter? What was the employee's reaction upon receiving the communication? Did you obtain any formal commitment from the employee? What was the role of the HOD in addressing the underperformance of the employee?
There are many questions associated with your post. Additionally, please confirm whether your company intends to merge the performance improvement plan (PIP) with the notice period.
Thanks,
Dinesh Divekar