19 The onus was on the claimant to place in evidence "sufficient facts" to lead the court to the view that prejudice would be occasioned to it if the limitation period was extended. The facts that the claimant placed in evidence by way of cross-examination or which otherwise emerged from the opponent's evidence in general included: (1) that there were a number of employees who had worked with the claimant during the relevant years who are available to give evidence of the nature of the claimant's work system, the nature of the opponent's job throughout the years of his employment with the claimant, the type of equipment with which the opponent worked, the various noise levels of the work environment and the availability and/or use of protective ear muffs; (2) that the previous employers with whom the opponent worked between 1960 and 1979 were identified; (3) that the majority, and it appears all but one, of previous employers' work environments were "noisy"; and (4) that although the particular shipyard at which the opponent completed his apprenticeship had closed, the firm or business with which he worked during a five, and perhaps seven, year period from 1960 was still operating.
20 The claimant called no evidence to suggest that any of the other businesses or firms for which the opponent worked in the period prior to employment with the claimant were no longer operating. However in cross-examination the opponent, in answer to a question as to whether the former employers were "still around", said that "some had disappeared". There was no cross examination of which employers had disappeared in particular whether they were the ones for whom he worked at the earlier or later part of the period 1960 to 1979 (tr.10). There was no evidence that any of the possibly relevant records in relation to the opponent's employment or the employment environment in which the opponent worked during those years were unavailable.
21 The medical reports and Worker's Compensation records established that the opponent had first noticed a slight hearing difficulty in 1983, four years after the commencement of his employment with the claimant. The onus was upon the opponent to place before the primary judge "sufficient facts" to establish that the opponent would be prejudiced at trial in establishing the extent of any effect on the opponent's hearing capacity from his employment prior to employment with the claimant: if it did, it was for the opponent to show that the prejudice was not material. As I have already said there was no evidence, except for the general reference to "some" having disappeared, as to businesses being closed or records being unavailable from the previous employers. There was also no evidence that as a matter of forensic medical expert evidence it would be difficult to carry out a just apportionment if one were to commence from the premise that the records were unavailable. No evidence was led to suggest that a medical witness expert in the relevant field would be prejudiced by having to work only from the opponent's clinical presentation as at 1983 and following.
22 The primary judge's finding that the uncertainty about how much of the opponents hearing loss was attributable to his former employment was not caused by lapse of time in bringing the proceedings but by the "nature of the case" is in my view an expression of the conclusion that there was no prejudice established by the claimant by reason of a lack of records or unavailability of evidence. The term "the nature of the case" seems to me to refer to the fact that the hearing loss as reported upon by the expert was first noticed four years after the opponent commenced employment and that the nature and progress of the condition is one that is inherently surrounded by uncertainties. It is not, as the claimant submitted, directed to a comparison of the position as at 1993, when the limitation period expired, with the position as at 2000 when the application was made. In short, the claimant's contention that the primary judge had committed the same error as the Queensland Court of Appeal in Taylor's case is not made out as a matter of construction of the primary judge's language.
23 The primary judge carefully considered the evidence before him as to possible prejudice that may be suffered by the claimant. Although the claimant established by way of cross-examination of the opponent that the environment of the majority of previous employment was "noisy" the nature of that noise was not explored in any detail, except for the possible reverberation of noise of hammers on the hulls of ships. The claimant asked very few questions of the opponent about the nature of the equipment used in that employment period and asked no questions about the duration of the noise or the level of the noise. The cross examiner resorted to questions about whether the opponent had fired rifles during his cadet years at school or whether he had a "fetish" for heavy metal music. The primary judge referred to the relevant authorities and I am unable to agree that he failed to apply the principles enunciated within them.
24 Contrary to what the claimant has suggested, the primary Judge did not place any onus on the opponent in any wrong way. The claimant submitted the primary Judge concluded that the claimant had an onus of contradicting the proposition that "a satisfactory apportionment of the attributability of the opponent's hearing loss may be undertaken by medical evidence." He did not: he merely said that the claimant had called no evidence contradicting it. That was a relevant observation. If the proposition could be contradicted, and if the contrary of the proposition could be established, the claimant would have identified an item of prejudice. But this it did not do. The claimant's written submissions contended that whatever obligation it had to call evidence on prejudice was negated by the opponent's reliance on Dr Macarthur's report of 24 April 1991, which said:
Mr Fowke has a moderate, bilateral, sensory-neural deafness due to exposure to loud noises in his work as boilermaker over the past thirty years.