Time off reasons are used to report and schedule paid time off. Unpaid Long term unpaid time off should either be reported as time spent on a non-billable project (e.g., in the case of compensatory time), or as a period of resource inactivity (e.g., in the case of a leave of absence). Otherwise utilization reporting may be misstated.
...
Most organizations need to add a few customize the default list of time off reasons (e.g., Bereavement) to the default list in Projectorin Projector.
Projector offers functionality that allows you to track time off balances by time off reason by employee.