If an exempt employee has a 90% appointment, how many vacation or sick leave hours does the employee take per day?

It would depend on the exempt employee’s schedule for the particular day of sick or vacation leave. If on one of the sick or vacation days, the exempt employee was scheduled to work 8 hours – it would be 8 hours of sick or vacation leave reported. If on one of the sick or vacation days, the exempt employee was scheduled to work 4 hours – it would be 4 hours of sick or vacation leave.