Can employee take leave during his notice period?

As Company rules.It all depends on the relationship the employee has with the Company...Employee is expected to give notice period so that they complete the work & hand over the same to some one..

It's depends upon position. Sometimes it is important to follow rule of1 month notice period because of importance of work, handover to replacement. Management is responsible for taking decision about such condition.

It depends upon organization,  Employee can avail leave benefit subject to handover process.

Specific complaint or formal notice of employee dissatisfaction related to adequacy of pay, job requirements, work conditions, other aspects of employment, or an alleged violation of a collective bargaining agreement is called grievance   

 

Yes.... an employee can take leave during his notice period. But it depends upon the nature of relationship between employer and employee

YES.

If he or she has annual leave balance.

It depends upon organisation. However, as per industrial practice, employee can avail leave benefit subject to the handover process.

Yes if it's an emergency and as long as it doesn't create any disturbance to the company's operations.

No, except medical Leave if entitled. 

if not then he has to submit medical certificate. correspondengly his / her notice period will get enhanced with the same duration of leave.

It depends on the situation, but it must be taken into account that there are situations in which there is an element of unusual surprise, or we have nothing to do with it, meaning that it is something outside our control.

It differs from Company to Company. Most companies have a policy that you cannot take leave during the notice period, however they will pay you for the unused leave. 

No, but exceptional cases like death incidents or medical mergencies we can consider the leave. But notice period will be extended according to the number leave days availed.