In this context his Honour noted at [56] and following that the concept of impropriety in the context of costs had been given a broad definition. His Honour referred to re Massey and re Windeyer , Fawl & Co ; ex parte Foley (1930) 31 SR (NSW) 145; Mason-Jones v Jones (1987) 11 NSWLR 583 and Cachia v Isaacs (1985) 3 NSWLR 366. From that analysis his Honour distilled a number of principles at 199 - 200 [71]:
"Fourthly, if through the solicitors negligence or ignorance, expenditure has been incurred, the assessor may disallow such expenditure on the basis that it has not been properly incurred: re Massey & Carey .
Fifthly, if through negligent advice, work has been done or expenditure has been incurred, the assessor may disallow such expenditure, or the cost of that work: re Windeyer .
…
Ninthly, where a solicitor is negligent, there may be a number of consequences for the client. The client may be disadvantaged in having work done for which he is later charged, where there has been no benefit from that work. The consequences for the client, however, may go beyond that. The negligence may bring about the failure of the action. The client then loses what he sought to gain by the litigation. Or the client may be disadvantaged in some other way. He may, for instance, alter his position to his detriment as a result of poor advice. Where the solicitor's negligence has consequences beyond the cost of the work performed, the matter is properly one for a cross action.
Tenthly, that is not to say that the client, in such circumstances, can afford to ignore an application by the solicitor to have a bill of costs assessed. The client, in such circumstances, not only has a right to claim damages in a cross-claim, but the right to resist (upon the grounds set out above) a claim for the cost of the work performed. A negligent solicitor, in such circumstances, can only recover for services which, notwithstanding his negligence, were of some real advantage to the client: Cachia v Isaacs ."
34 It does not seem to me that Ryan supports the proposition that a costs assessor to whom an application for an assessment of costs is referred pursuant to s 206 of the Act is without power to carry out an assessment in a case in which there is a "major disputed question of negligence in respect of a solicitor's work" (plaintiff's written submissions, 3/11/03).