Exempt employee who has used up all allowed paid sick days.

TeresaBlank

First, we are a small (under 50 employees) company. We have an accounting manager who has used all of her sick days allowed under our plan. Can we require her to use her accrued vacation days for any other sick days? I am unclear about the wording in the FLSA: It says we can deduct from her paycheck all whole sick days since she has used up all of the leave time to which s/he is entitled under the "plan." By "plan," is this "paid sick days" plan or all of the paid leave days allowed, including vacation and sick?