29 CFR 1450.1 - Definitions.
(b) The term agency head means the Director of the Federal Mediation and Conciliation Service.
(c) The terms appropriate agency official or designee mean the Director of the Financial Management Staff of FMCS, or such other official as may be named in the future by the Director of FMCS.
(d) The terms claim and debt are deemed synonymous and interchangeable. They refer to an amount of money or property which has been determined by an appropriate agency official to be owed to the United States from any person, organization or entity, except another Federal agency.
(e) A debt is considered delinquent if it has not been paid by the date specified in the agency's written notification or applicable contractual agreement, unless other satisfactory payment arrangements have been made by that date, or if at any time thereafter the debtor fails to satisfy obligations under a payment agreement with the agency.
(f) The term referral for litigation means referral to the Department of justice for appropriate legal proceedings.