Hi, You are referring to the performance issues during the notice period only, which will be very minimal, say 30 days? So, was his performance while in service good? So why deny FNF and the relieving letter on those grounds? You may deny the relieving letter and FNF if the employee absconded from work without any information. You can justify the reason. But in your case, the employee submitted the resignation and completed the notice period. Obviously, the employee might not perform with full enthusiasm during the notice period, which is very common. Full and final settlement can be held/denied when there is a significant loss to the company caused by the employee by any means. Even in that case, it needs to be proved by the employer.