GLOSSARY TERM  
  Rise and Fall  
 
  DESCRIPTION  
  A contractual provision for increasing or decreasing payments by a principal to a contractor for Works undertaken under the contract, in response to events that increase or decrease the contractor's costs under the contract through no fault of the contractor. Rise and fall events may include the impact of inflation, rises in labour costs, or the movement of foreign currency where an element of the contractor's costs are related to the value of a foreign currency.