Dear Rajesh,
When the employee leave policy is designed, it starts with the tenet: "employee leave is a privilege and not an entitlement." What does your policy say? Has the approving authority for each designation been defined in the leave policy?
Approving Authority for Leave
The HOD should be the approving authority for the leave. As the HODs are responsible for maintaining operational continuity, they deserve to be bestowed with matching authority.
Consequences of Unapproved Leave
If the leave is not approved, the leave application gets turned down. Therefore, the days for which the employee had applied for leave become unauthorized absences, and the pay is automatically forfeited.
Avoiding Negative Outcomes
However, discretion lies in avoiding such situations. Turning down leave applications leaves a bad taste in the minds of the subordinates. To avoid bitterness, HODs should be advised to prepare a leave plan for the year. Any overlap has to be avoided. While planning manpower, some leeway has to be left for emergent situations. If this leeway does not exist, then such situations could crop up again and again.
Thanks,
Dinesh Divekar