Box 14 is Informational. Do you have a tax or a Leave amount? The IRS requires that the employer report (show to the employee) any leave Paid, that also is already in Box 1, because if the employee also is self-employed, they have to use this amount in consideration of any total they intended to report on their Sched C.

Whose return and which form are you working on? Do they also have a Sched C? Were they trying to take paid leave or sick leave on the Sched C?