The expert evidence
77 The trial judge received expert evidence from four people. One expert witness was Ms Louise Boin, a neuropsychologist whose evidence was, in all relevant respects, accepted by the trial judge as unchallenged. I refer to it later. The other three experts gave evidence concurrently. They each provided a written report, they contributed to a joint document disclosing the extent of their agreement and disagreement, and they gave oral evidence concurrently.
78 Mr Richard Giles is a principal of Evolution Research and was engaged by HOI as a consultant at the outset of the project to develop a wage assessment tool for Business Services. He was one of the persons who developed, tested and refined BSWAT. He is a staunch supporter of BSWAT and of the notion embedded in it that it is legitimate, practical and relevant to assess competencies as well as productivity when fixing wages for disabled workers. The competencies included in BSWAT were developed by reference to "industry based competencies" drawn from a range of industry training packages. Mr Giles' written report said:
Competency based wage assessments focus on the abilities of the person being assessed without necessarily focusing on their productivity or the speed with which they undertake tasks. Competency based assessment is the foundation of industry led training programs and as such is seen as a critical component of wage assessment for the Business Services sector.
79 As I indicated earlier, during the development of BSWAT an initial trial of the draft wage tool in 19 Business Services sites produced results which were regarded as yielding wage outcomes that were too high. The tool was revised. A number of changes were made. One change was to more closely align the competency-based component with a Certificate II level of competency rather than a Certificate I level, thus raising the standard to be satisfied. Mr Giles justified the changes in his written report in this way:
An initial trial of the draft wage tool in 19 Business Service sites in four different states showed that whilst the productivity element was appropriate, the competency element did require refinement. In effect, the competency based component was seen to be too rudimentary for operation in a number of the industry settings. This was effectively a change in the 'pitch' of the competency based components and led to them being more closely aligned with a Certificate II level of competency rather than a Certificate I level. It was agreed by the project team and by the steering group that this was a more accurate reflection of a full wage earner in an open employment setting, and where their skills were expected to be.
80 The Australian Quality Training Framework ("AQTF"), which was referred to frequently in the expert evidence, is part of the National Training Framework. It was used, for example, in the TAFE (Technical and Further Education) systems. It assisted the construction of course curricula and training packages. AQTF is built into the Australian Qualifications Framework ("AQF") which is a quality assured national framework of qualifications in the school, vocational education and training, and higher education sectors in Australia. The 10 level system spans the range from Certificate I to a doctoral degree (eg. Ph.D). Certificates I and II levels refer to training for basic vocational skills and knowledge, post-secondary school. Assessment by reference to Certificate II levels rather than Certificate I therefore assumes, first, knowledge and competency transmitted usually by some post-secondary school training or experience, and achievement at least part way up the scale which the overall scheme reflects.
81 Evaluation of the standard of knowledge, understanding and ability to communicate that knowledge and understanding at a Certificate II level (i.e. a little under the level in some trade courses) was bound, on the expert evidence in the present case, to present a further disadvantage to intellectually disabled people. This is a matter to which some of the experts directed particular attention.
82 Mr Giles explained the units of competency which were chosen for BSWAT in the following way in his written report:
17. d. (i) … the competency assessment component incorporates four core units of competency. They are occupational health and safety, working with others, communication in the workplace, and applying quality standards. During the design phase of the BSWAT it was found that these core units of competency (with different titles in different industry training packages) are common to all industries. As such, these were considered to reflect the range of skills and knowledge applicable to all workers in any setting.
The core units of competency in the BSWAT therefore reflect an amalgamation of relevant performance criteria from a range of industry training packages. Assessment of the core units of competency are made by a combination of direct observation, questioning and the review of third party evidence. In order to streamline the assessment process, the core units of competency include those performance criteria deemed most critical to the performance of duties in the Business Service environment. As such, they are all deemed critical, and to achieve competency in each of these units all performance criteria must be achieved.
17. d. (ii) Up to four industry-specific units of competency are chosen in accordance with the tasks performed by the worker. It is recognised that not all workers perform a range of duties broad enough to allow for the selection of four industry-based competencies, but based on the review of industry expectations it was deemed that a worker in an open employment setting, (i.e. achieving a full award rate of pay) would be expected to perform at least four industry-specific competency duties.
(Emphasis added.)
83 Two matters might here be noted. First, development of core competencies using industry/training packages (if that is what in fact occurs) is not the same as expecting that, and assessing whether, such competencies are possessed by an individual who will only receive some fraction of the award wage rate for the lowest work grade contemplated by the award. The two concepts are not necessarily in the same field of examination. Secondly, any concept of "industry expectations" must be adjusted to the practical circumstance, already mentioned on a number of occasions, that what is required to be assessed is what percentage of a rate of pay at the minimum award level a disabled worker should receive for performing tasks that are, by their very nature, basic and routine.
84 Mr Paul Cain is the Director of Research and Strategy at the National Council on Intellectual Disability. In his report he recorded that the initial BSWAT trial involved 83 participants. In that trial, the average competency score was higher than the average productivity score (64%:46%). That provided an overall score of 54%, resulting in an average wage of $6.11 per hour. In a revised trial involving 81 participants, after the adjustments referred to by Mr Giles, the average competency score dropped below the average productivity score (26%:43%) providing an overall score of 34% and a reduced average hourly wage of $4.13. Data current to October 2008 showed that the ratio had declined again, with average competency as tested by BSWAT now well below average productivity (8%:38%), producing an average overall score of 23% and an average hourly wage of $3.20. Mr Cain recorded that the actual average hourly wage of initial trial participants in 2002 was $3.42 compared to $3.20 for those assessed by BSWAT in 2008. That is, on a comparison of actual hourly wage data, average wages have actually fallen between 2002 and 2008 and are certainly much lower than the indicators given by either of the trials. Mr Cain made the following points in his written report:
118 There is incoherence between the BSWAT assessment scores of productivity and competency. The lack of correlation between BSWAT productivity and competence scores is concerning given the assumption that skill generates productivity. There should be a strong correlation between the competency scores and the productivity scores. The lack of such a correlation suggests that there is a flaw in the BSWAT design.
…
122 The competency component of the BSWAT bears little relationship to the productivity assessment and operates to diminish wages for employees with disability. The lack of relationship with the competency assessment to actual work tasks suggest that the BSWAT competency component is measuring skills and knowledge not directly relevant to the job tasks that employees are employed to perform.
…
129 In my review of the employment literature for people with intellectual disability, I am unaware of any method where on-the-job competency or productivity of people with intellectual disability is measured by interview or via vocational assessments. The literature is invariably concerned with the training of discrete job tasks towards an employer agreed standard of quantity and quality. Performance data is collected during training to track outcomes and to assist a review of the effectiveness of instructional techniques. An interview is not evidence of competence or productivity in the completion of a job task. People with intellectual disability will struggle with question and answer tests that require effective communication and comprehension. Many people with intellectual disability will find a formal interview difficult and intimidating.
(Emphasis added.)
85 Mr Cain also pointed out that in research carried out by Mr Giles' own team, Evolution Research, it was revealed that the notion incorporated in BSWAT of a fixed four industry competency units did not accord with reality at the wage level taken as the starting point for assessment of pay in ADEs. Under BSWAT arrangements competencies must be identified which have a counterpart in industry. If four industry competencies against which a worker can be assessed cannot be identified, the worker's score is automatically discounted to reflect the absence of competency. This is despite the fact that in open employment non-disabled workers at the Grade 1 level were found to have, on average, only 2.8 competencies. Mr Cain pointed out:
101 If BSWAT were to be applied to comparable jobs in open employment, the average worker with 2.8 competencies would have their wages discounted below the award wage. The average workers would only be able to meet a maximum of 2 industry competencies. Workers would be given a '0' for two industry competencies as the BSWAT demands 4 industry competency units to be included in the wage calculation. The workers would have their award wage discounted by at least 12.5% …
102 The BSWAT applies an industry competency assessment that is not comparable to standards of award based wages in open employment by expecting workers with disability to meet a higher number of industry specific competencies than people without disability.
86 Mr Phil Tuckerman is the Director of Jobsupport, an organisation that provides vocational training, placement and ongoing support services for people with an IQ less than 60. He has been closely involved in the development of wage assessment tools including the SWS tool, which is widely used for intellectually disabled persons and persons with other disabilities in open employment. His written report included the following:
35 The weighted productivity assessment used in the Supported Wage System [the SWS tool] is strictly productivity-based. Workers with a disability are assessed to compare their output relative to that of non-disabled co-workers on the tasks that make up their job. In the Supported Wage System there is no separate rating or discounting for 'competency', or to reflect the fact that the range of tasks which the disabled worker is able to perform is likely to be more narrow than the range of tasks performed by a non-disabled co-worker. The Supported Wage System uses the lowest pay classification under the relevant award or agreement that contains all the tasks performed by the worker.
36 The Supported Wage System ensures that the employer pays a worker with a disability exactly the same amount that a non-disabled co-worker on the same award or agreement classification would receive for producing the same volume of work.
37 I was a member of the reference group for the 2001 Supported Wage System Review. The review found that both employers and workers with a disability were satisfied with the Supported Wage System approach.
38 [Data current to October 2008 collected by the Department of Family and Community Services showed] BSWAT competency scores far lower than productivity scores. Surely if the competencies were relevant to the job they should have been trained to criteria prior to the BSWAT assessment. The low competency scores raise questions about the relevance of the competencies, the adequacy of the training services provided for their workers with a disability on the competencies and the methods used to assess the competencies.
87 Prior to giving oral evidence the three experts produced a joint document. The joint document identified areas of agreement and disagreement.
88 Mr Giles' views were referred to in the following terms:
Richard Giles rejects that positions held by people with disability are only process oriented positions, limited in their scope and can only be assessed by productivity. Many positions held by people with disability are positions where knowledge and skill is key. These positions offer diversity and interest to the person with disability and move away from the notion that positions filled by people with disability can only be process driven.
Assessment of productivity fails to identify and reward a person's level of skill, flexibility and worth to the organisation …
…
The BSWAT provides a balance that recognises the two fundamental aspects of work - competency and productivity. Competency is not a discounting of a person's wage unless there is an inherent expectation that a person with disability is not capable of achieving this. I find this perception difficult to accept, as I know of and can provide evidence of many people with disability who can achieve the level of competency outlined in the BSWAT. Having an intellectual disability does not automatically preclude a person from having the ability to achieve competency.
(Emphasis added.)
89 Mr Tuckerman and Mr Cain expressed their views quite differently:
Phil Tuckerman and Paul Cain believe their role, as expert witnesses, is to give evidence relevant to the claims raised by the applicants. The applicants are people with intellectual disability performing process-based work. We have therefore confined our comments to matters relevant to this population and this type of work. Issues such as how workers with disability are paid to perform knowledge-based jobs within a productivity based wage system are not relevant to this case.
Phil Tuckerman and Paul Cain argue that an Award rate of pay only requires employees to achieve the volume of productive output in terms of quantity and quality per job task as agreed by the employer.
The productive output required is determined by comparison to the volume of productive output achieved by an employee paid the full award rate for completing the same job task.
It is important that any sub-award wage calculation results in the person with disability receiving the same income for the same volume of work output that a co-worker without a disability on the same award level would receive. This is the basis of the Supported Wage System (SWS).
…
We reject the notion of discounting wages for jobs with a narrow range of tasks. Jobs performed by people with and without disability in the regular labour market for award rates of pay contain a range of tasks from narrow to broad. A multi-skilled job, or a job with a broad range of tasks, is not an Award requirement or an employer standard.
…
… the AQTF system of competency is not a universal standard applied by employers as the BSWAT asserts. Employers are most concerned with productive output rather than the meeting of competency assessments. We consider it unfair for a pro-rata award wage assessment to expect people with disability to meet standards not applied to all workers doing the same work at the same Award classification.
Competency assessment has poor correlation with productive value and can distort wage outcomes to the detriment of employers and employees.
…
The majority of the people whose wage is determined by pro-rata award wage assessment tools are people with intellectual disability. Both applicants in this matter have intellectual disability. The majority of the jobs that this population perform are process jobs, not knowledge based jobs, due to the impact of their disability.
(Emphasis added.)
90 These observations by Mr Giles, and by Messrs Tuckerman and Cain, raise an important point for the present case. The present case is about Mr Nojin and Mr Prior. In some respects their circumstances must remain in focus. However, any examination of whether it is reasonable to use BSWAT, even in their cases, cannot be undertaken without an appreciation of the more general context.
91 That said, in my view the differences between the experts reveal a more fundamental disagreement about how to evaluate work which must, under the award, be measured by reference to a known benchmark. That benchmark is process oriented. It involves minimal decision making. It is not knowledge based. In my view, those circumstances require less weight to be given to Mr Giles' opinions than to the shared opinion of Mr Tuckerman and Mr Cain.
92 Disagreement about competency assessment is reflected in the following entries in the joint report:
4.1. AQTF Industry Competency
There is disagreement about the use of industry competency assessment for the purposes of a pro-rata award based wage assessment.
Richard Giles submits that the AQTF industry competencies have been developed by industry to promote correct processes and safety within the workplace. BSWAT competencies are set at certificate level 2 and would be attainable by employees earning the full award rate in the open labour market. He also submits that this level of competency would be reflective of a base level expectation by employers for payment of a full award rate of pay.
…
Paul Cain and Phil Tuckerman, as stated above, reject the AQTF industry competency assessment as a valid assessment of pro-rata award wages. The fact that employers do not apply AQTF industry competencies to all employees at entry and low award level jobs makes it inappropriate that this standard be uniformly applied to employees with disability to determine an award-based wage. It is reasonable, however, to expect skills required by the employer, directly related to the job, to be trained with the assistance of an employment service provider.
4.2 AQTF Core Competency
Richard Giles maintains that workers without disability, earning full award rates of pay, would be expected to, and able to, answer or demonstrate the criteria reflected in the core competency units. These competencies have been developed by industry representatives including employers, educators and union groups, and represents a fair and reasonable benchmark to expect employees with disability in any employment setting to meet to be paid full award wages.
Phil Tuckerman and Paul Cain, as stated above, reject the AQTF competency assessment as a valid assessment of pro-rata award wages. The AQTF system is not applied to employees without disability on a universal basis, particular [sic] at entry or low award level jobs.
93 The stark difference in views represented by the joint document continued during oral evidence when the three experts gave their evidence concurrently. Initially the experts discussed their areas of disagreement identified in the joint report, with the occasional intervention of the trial judge but without cross-examination at that point. Later there was an opportunity for cross-examination. In the initial exchanges, Mr Giles identified the fundamental underpinning of BSWAT in the following way:
The expectation of the wage tool was to compare to what a person in the general employment setting would be expected to do to earn the award rate of pay. So they were the fundamental - that's the fundamental underpinning of the development of the wage assessment tool.
94 It is evident that the other two experts regarded this approach as theoretical and artificial. Occasionally stronger language was used. They did not regard Mr Giles' approach or the construction of "quality training framework competencies" to be reflective of what actually happens in the workplace. Mr Tuckerman said, for example:
We place a lot of people with significant intellectual disabilities, similar to the two individuals here, into open employment, and they work in highly customised jobs, and there's no question from employers that the fact that they don't do the full range of duties is an issue. It's only their productivity on the duties they actually do that is the key issue. If they produce 100 widgets then they should get the same pay as someone without a disability that produces 100 widgets. That is the essence, I guess, of the approach of the supported wage users. So I guess I would argue that you don't need the full range of duties, but you don't need to meet any sort of national competency because in our experience across all 1500 placements, we have never been once asked to train against competencies, not once.
95 Mr Cain said:
For instance, the only reality testing that Richard Giles Consultancy did was do the modelling competency matching, and that was the only time that we really tested some of these assumptions, and I think it was very revealing to find out that on average in open employment jobs for comparative jobs, there was, for instance, only 2.8 competencies per job, which was not very much different from the business service jobs at 2.4, 2.5, which begs the question, if that's the only time we actually get some reality testing based on the assumptions being put forward, it begs the question, why did we have to have a wage assessment tool fixed at four competencies when not [sic] even people without disabilities in open employment, on average, have jobs of less than three?
So I'm thinking that the assumptions that have been put forward haven't been based on any hard evidence of what goes on in actual employer-employee relations, whereas I think the assumptions that have been made is by analysis of the training framework.
96 Mr Giles said:
In relation to the core competencies, I would say it's a realistic expectation that all employers do expect people to be able to communicate and perform the four core competencies if they're going to get a full award rate of pay.
but Mr Tuckerman responded:
I guess all I can say is that that is simply untrue. In the regular work place, people aren't required to know the full range of industry competencies. It's - at entry level jobs, they're expected to know the jobs that they do. Whether they have a disability or not a disability, they're expected to perform the tasks that they need to know. The notion that an employer will not want to pay someone without a disability the full award wage because they can't do the full range of duties in one of these competencies isn't correct, because some of them aren't relevant to particular workplaces. And they don't markdown their wages because they can't do something that isn't relevant in that workplace for that person's job.
It just isn't the reality. And we have worked with thousands of employers combined with Nova and Ability, it simply isn't the reality in the workplace. People who have designed these national competencies might like to believe that they have permeated the workplace to that extent, but the truth [at] lower level positions is that that just simply isn't so.
97 Mr Cain contributed:
I think what we're hearing is the core of the difference between the views of Phil Tuckerman and myself and Richard Giles is that Richard is putting a premium on things that employers report to say they like, like flexibility, multi-skilling. But I think that takes us away from an assessment of actual agreed job. That takes us into futures, future predictions, whether that person may or may not be needed to do some other task. I think that takes us into, sort of, a guessing game.
…
So I think what we're hearing is the core difference between actuality and hope, really - a hope for a workforce that some day has all this multi-skilling and flexibility, because that's really the hope that the early 90s and the scheme of the Australian training quality framework.
98 Mr Tuckerman said:
I guess all I would say is that this is an artificial construct that is being introduced here. Employers don't use these things.
99 Another criticism was expressed this way by Mr Cain:
… how can someone possibly be productive but have zero per cent competency? That's bizarre and strange.
100 Mr Tuckerman said:
I guess fundamentally I don't think competencies have any part in a wage assessment apart from attaching to different levels in an award. The notion of assessing people against a set of industry competencies that the employers themselves don't use as base grade, seems to me to be quite inappropriate.
…
… the whole notion of the inclusion of competency is a red herring. It should play no part in wages …
101 Mr Cain echoed these comments:
… the whole issue of competency in productivity is a forced issue that doesn't have any sort of reality to it …
102 As to assessment by interview Mr Tuckerman said:
All I would say is that where - the majority of people in ADEs have an intellectual disability. They are going to have, predictably, difficulties with comprehension and, predictably, difficulties with expressive language. They are going to have difficulties with any sort of complex or abstract question. I mean, that - that's really a given.
103 Mr Cain said:
It's hard to control my incredulity about this issue. We are talking about people who have been assessed as having an intellectual disability, less than 70 IQ, two standard deviations below the mean, inherently have great difficulties with language, communication, abstract notions. The whole history of training in employment for this group has been on a more of a physical nature, explicit instruction, one on one followed by demonstration using principles of applied behavioural analysis where you are constantly observing, monitoring the effects of your training over time. The - it's never in the literature - never discussed whether you would determine a person's competency or ability to do a task by interview. I really think that it is probably - of all the choices that you could make for this particular population, that it would be the worst choice.
…
… I - you know, if you were looking for something to do to make it more difficult for this group of people that have struggled to get award based wages for many years then I would choose this one.
104 Mr Giles' defence of his position in this discussion may be seen in the following statement:
MR GILES: You know, for a final comment, I would just say that, you know, using the BSWAT for a person, whether they're assessed in ADE or open employment, would deliver, you know, the same result, given the same task and the same industry. You know, it's the standardisation of and consistency across the board. So whether it's an ADE or whether it's open employment, it can be applied in both and you would get the same outcome.
HIS HONOUR: In respect of the same person.
MR GILES: In respect of the same person doing the same job.
105 However in cross-examination the following exchanges occurred:
DR HANSCOMBE: … You have read the Marshall Consulting - what is it called, Modelling and Competency report, haven't you?
MR GILES: Yes.
DR HANSCOMBE: And you know that it says that non-disabled workers in open employment have an average of 2.8 industry competencies. Do you know that it says that?
MR GILES: Says that, that was based in our research.
DR HANSCOMBE: Yes, that is what it says, and it is the case, is it not?
MR GILES: On that research we did, yes, in this case.
DR HANSCOMBE: Well, since - I assume you assert your research to be correct.
MR GILES: Mm.
DR HANSCOMBE: So it is the case that non-disabled workers in open employment have on average 2.8 industry competencies, is it not?
MR GILES: Yes.
DR HANSCOMBE: That means, does it not, that if you required the non-disabled worker to do the BSWAT, that their wage would be reduced.
MR GILES: Yes.
…
DR HANSCOMBE: If the non-disabled worker performed three competencies, and had as a matter of fact about their training, three competencies, and they were assessed on the BSWAT, their wage would fall, would it not because they wouldn't be assessed against four industry competencies?
MR GILES: Yes.
DR HANSCOMBE: And if that person were the average worker, and in fact only had 2.8, so they only passed two, their wage would be again reduced, wouldn't it?
MR GILES: If that was the way it happened, yes.
DR HANSCOMBE: Well, that's how the BSWAT works, isn't it?
MR GILES: Yes.
…
DR HANSCOMBE: Now, you said the assessors are trained to simulate situations or demonstrate situations, they don't have to ask the questions as they're set out. That was your evidence, wasn't it?
MR GILES: Yes.
DR HANSCOMBE: Not all of those questions are capable of demonstration, though, are they?
MR GILES: I'm not sure - well, yes, I would say off the top of my head I would like to think that we could at least attempt most of them, maybe not all of them, I'm not sure.
DR HANSCOMBE: Well, most of them doesn't really matter, does it, because you have got to pass every question and every element of a competency to pass the competency, do you agree?
MR GILES: Yes.
DR HANSCOMBE: So if one question in a core competency can't be simulated or demonstrated, then inevitably a person who can't understand the question must fail.
MR GILES: Yes.
DR HANSCOMBE: Whether or not in fact they had the knowledge that question was designed to test.
MR GILES: Yes.
…
DR HANSCOMBE: But whether you have got the knowledge or not, if you can't understand the question as a question, some of them are incapable of demonstration that you have got the knowledge; that is so, isn't it?
MR GILES: Yes.
(Emphasis added.)
106 In his cross-examination Mr Tuckerman repeatedly made the point that in entry level jobs for which the Grade 1 rate of pay is offered, and upon which wage assessment in ADEs takes place, the work is process-based involving very routine and simple tasks. He consistently rejected any suggestion that competency had to be built in as a measure of "work value" different from output. As an example the following exchange occurred:
MR TUCKERMAN: I am talking on a general principle, yes. I mean, we're not talking quality of ideas here. We're talking about very, very routine tasks like sweeping and sorting.
MR BOURKE: Can you understand that even with routine tasks, there can be a big difference in the quality of the way they are performed?
MR TUCKERMAN: No, I can understand from all the workplaces I have been to that there is a minimum acceptable standard, and generally for very routine standard there isn't really any other standard that is set for jobs.
and:
MR BOURKE: Okay. Now, but would you agree that many jobs are not simply process based or knowledge based, but invariably are a cocktail of the two?
MR TUCKERMAN: No, I wouldn't.
MR BOURKE: I see.
MR TUCKERMAN: Not in the jobs that people with intellectual disability do. They're invariably process based. The reference to knowledge based jobs is a throwback to the supported wage evaluation where some people questioned how people in senior public service jobs who are paid to dream up new policies could be done on a productivity base wage. And I always thought it was a complete furphy. We're talking about people with significant intellectual disability doing very routine tasks and being paid to think through issues isn't relevant.
MR BOURKE: I see. So they're not required to think when they're working at - - -
MR TUCKERMAN: They're not required to make decisions.
MR BOURKE: Yes, I see.
MR TUCKERMAN: In fact, you would specifically avoid jobs where people were required to make difficult judgment decisions.
107 Doubt at this general level about the ability of intellectually disabled people to demonstrate their "work value" through BSWAT was confirmed, in my view, by reference to the actual situation of Mr Nojin and Mr Prior. It became clear that, in their cases at least, their actual circumstances were not being fairly assessed by the tests carried out. I have already referred to those assessments.
108 The passages which most clearly reflect the findings of the trial judge about the general acceptance of BSWAT, and his assessment of the effect of the expert evidence, in my view are the following:
86 A circumstance of great weight in the present cases is the history of the development of the BSWAT ... The BSWAT has been developed specifically for the purpose of assessing the wages of disabled persons employed in ADEs. It has the approval of the Commonwealth. It has been endorsed by both the AIRC and the AFPC. It has been found to comply with Standard 9 of the Disability Services Standards. It has also been found to be in conformity with the Guide to Good Practice Wage Determination. Further, the BSWAT has received these endorsements with the support of the trade union that has had the carriage of applications to formalise and improve the methods of fixing, and the rates of, wages for employees with disabilities, the LHMU. The BSWAT is also supported by the trade union movement generally through the ACTU, employers generally, and employers in ADEs through ACROD. Although, from time to time, some of those supporting the BSWAT have expressed reservations about aspects of it, their support has been consistent. Similarly, the opposition of advocates for the disabled to the BSWAT has been consistent. Informed opinion about the merits of the BSWAT is therefore divided. Where the issue is the reasonableness of elements of the BSWAT, it is difficult to conclude that the considered view of one side of a genuine debate should be rejected altogether.
…
89 It is fair to say that all three experts acknowledged that competency is a legitimate element in the determination of the value of a worker to an employer …
…
93 If a wage is intended to represent the value of an employee to an employer, then testing of competency is a legitimate element of assessing that value. … The fact that the BSWAT involves assessment of competency as well as productivity is not a factor that leads to the conclusion that requiring an employee in an ADE to have his or her wages assessed by means of the BSWAT is to impose a requirement or condition that is not reasonable.
…
98 In summary, the BSWAT has been developed as a tool for performing the very task for which it was used in assessing the wage levels of Mr Nojin and Mr Prior. It is not possible to set aside the very considerable support the BSWAT has in the ADE sector, or the considered opinions of consultants who have been called upon to examine the BSWAT, or to prefer the equally legitimately-held views of those who disagree with that body of opinion. The determination of wage levels for employees in ADEs by a method involving assessment of competencies is appropriate …
109 I do not read the evidence of the expert witnesses as representing a uniform view that testing for competency using a test like BSWAT was a legitimate inquiry in the case of disabled workers like Mr Nojin and Mr Prior. On the contrary, in my view, Mr Cain and Mr Tuckerman rejected such an approach. Their evidence gives considerable support for the proposition that the supposed measure of competencies involved in BSWAT is theoretical, artificial and irrelevant to the practical circumstances of intellectually disabled workers like Mr Nojin and Mr Prior.
110 In the extracts set out above, apart from criticising the artificiality of an assessment of competencies in relation to process-based work, both Mr Cain and Mr Tuckerman referred to the difficulty presented to intellectually disabled workers, who inherently have problems comprehending abstract concepts and expressing themselves, by the need to respond to questions involving abstract concepts in a formal interview environment. Evidence to a similar effect was given by the fourth expert, Ms Louise Boin, a neuropsychologist. Ms Boin went through the questions administered by BSWAT and explained the difficulties which would arise and the source of those difficulties.
111 The trial judge accepted Ms Boin's evidence, saying (at [79]):
79 It is clear that persons with intellectual disabilities are more likely to have difficulty demonstrating understanding of competencies, for the purposes of the BSWAT, than persons without intellectual disabilities. The expert evidence of Louise Boin, a clinical neuropsychologist, to this effect was unchallenged.