5 C.F.R. § 572.101

(a) An agency may determine which positions qualify for the payment of a new appointee's travel expenses to the first post of duty. Payment of travel and transportation expenses will be in accordance with the Federal Travel Regulation (FTR) (41 CFR chapters 301-304).

(b) An agency may determine which interviewees are eligible for payment of pre-employment interview travel expenses. Payment of these travel expenses will be in accordance with the FTR.