From as far back as the 196Os, many people within the construction industry have become increasingly aware that the unrelated nature and, often, poor content of drawings, specifications, and bills of quantities, made for inefficiency. Contractor’s claims arising from inadequate or unreliable information at the tender stage were becoming a more common occurrence. There was a time when a colleague of mine, when drawing up a list of contractors to be invited to tender, used to get his secretary to ring up each in turn and ask to be put through to the claims department. If she was, then that contractor was crossed off the list. For a long time now, however, such an exercise would be a waste of time for, in a competitive world, contractors cannot be expected to do for nothing work that has not been clearly defined in the tender documents. If these are unreliable, inconsistent or incomplete, it is not surprising that claims are made and that claims departments have come to be a permanent part of many contractors’ organisations.