Miscellaneous recoveries and refunds are all other recoveries and refunds including such items as refunds on empty containers; refunds of state and local taxes; refund of terminal leave compensation (if not credited to the applicable appropriation); recoveries of court costs; payments received by employees whose pay is disbursed by the Secretary of the Senate or Clerk of the House for services as a juror or witness; other compensation received by federal employees from private sources; recoveries from contractors for additional work necessary to meet contract conditions; and recovery of payments based on fraudulent claims; airline penalties for changing reservations of federal employees.