compensation
(C) For employees other than covered noncareer employees as defined in 2636.303(a) of this chapter, compensation does not include travel expenses, consisting of transportation, lodging or meals, incurred in connection with the teaching, speaking, or writing activity. For covered noncareer employees as defined in 2636.303(a) of this chapter, compensation does include transportation, lodging, and meals, whether provided in kind, by purchase of a ticket, by payment in advance, or by reimbursement after the expense has been incurred, unless such travel expenses are accepted under specific statutory authority, such as 31 U.S.C. 1353, 5 U.S.C. 4111, or 5 U.S.C. 7342, or an agency gift acceptance statute.