41 C.F.R. § 301-11.1 When am I eligible for an allowance (per diem or actual expense)?
Title 41 - Public Contracts and Property Management
When: (a) You perform official travel away from your official station, or other areas defined by your agency; (b) You incur per diem expenses while performing official travel; and (c) You are in a travel status for more than 12 hours.
Title 41: Public Contracts and Property Management
PART 301–11—PER DIEM EXPENSES
Subpart A—General Rules
§ 301-11.1 When am I eligible for an allowance (per diem or actual expense)?