For each determination to pay a recruitment incentive under this subpart, an agency must document in writing—
The basis for determining that a position is likely to be difficult to fill, as determined under § 575.106;
The basis for authorizing a recruitment incentive; and
The basis for the amount and timing of the approved recruitment incentive payment and the length of the required service period.
An agency must make the determination to pay a recruitment incentive before the prospective employee enters on duty in the position for which recruited.