45 C.F.R. § 73.735-1301
An employee who has information which he or she reasonably believes indicates a possible offense against the United States by an employee of the Department, or any other individual working on behalf of the Department, shall immediately report such information to his or her supervisor, any management official, or directly to the Office of the Inspector General. Offenses covered by the preceding sentence include, but are not limited to, bribery, fraud, perjury, conflict of interest, misuse of funds, equipment, or facilities, and other conduct by a government officer or employee, grantee, contractor or other person which is prohibited by title 18 of the United States Code. Employees and supervisors should refer to chapter 5-10 of the Department's General Administration Manual for procedures regarding the reporting and handling of such information.
45 C.F.R. § 73.735-1301