Sick time: You can deduct for full-day absences if you have a policy for doing so. You can also apply the employee’s sick leave/PTO time if they have any.
Deductions from pay may be made for absences of one or more full days occasioned by sickness or disability (including work-related accidents) if the deduction is made in accordance with a bona fide plan, policy or practice of providing compensation for loss of salary occasioned by such sickness or disability. The employer is not required to pay any portion of the employee’s salary for full-day absences for which the employee receives compensation under the plan, policy or practice. Deductions for such full-day absences also may be made before the employee has qualified under the plan, policy or practice, and after the employee has exhausted the leave allowance thereunder. Thus, for example, if an employer maintains a short-term disability insurance plan providing salary replacement for 12 weeks starting on the fourth day of absence, the employer may make deductions from pay for the three days of absence before the employee qualifies for benefits under the plan; for the twelve weeks in which the employee receives salary replacement benefits under the plan; and for absences after the employee has exhausted the 12 weeks of salary replacement benefits. Similarly, an employer may make deductions from pay for absences of one or more full days if salary replacement benefits are provided under a State disability insurance law or under a State workers’ compensation law.
Personal leave: Another exception to the requirement that the employee be paid for the entire week if they work any of it is taking personal leave other than for sickness or disability. The regulations state: “Deductions from pay may be made when an exempt employee is absent from work for one or more full days for personal reasons, other than sickness or disability. Thus, if an employee is absent for two full days to handle personal affairs, the employee’s salaried status will not be affected if deductions are made from the salary for two full-day absences. However, if an exempt employee is absent for one and a half days for personal reasons, the employer can deduct only for the one full-day absence.”
It is always best to have these things in writing (a personnel manual accomplishes this) so it is very clear to the employee that time off will be deducted. That way the employee does not assume they have benefits that do not really exist and there will not be any surprise when the time is deducted from their paycheck.