(a) Authority to approve. The head of an agency may enter into written agreements with the Commission for the detail or voluntary transfer, for set periods of time, of agency employees to the Commission in accordance with section 3643 of title 22, United States Code, and this subpart. Refusal by the head of the agency to agree to a detail or transfer, or extension of detail or transfer, is not reviewable by the Office of Personnel Management or appealable.

(b) Employee notice. The agency will furnish the employee with a copy of the written agreement which must contain a statement of the time limits for exercising reemployment rights and the conditions of reemployment.