Manser CCJ's basic mistake was, with respect, in endeavouring to return to the
assignment of liability according to a notion of true causation. Upon that footing,
his Honour was probably right to conclude that the original employer, in whose
employment the worker had first suffered the dermatological condition, was the
employer whose work activities had triggered the dermatitis and possibly
"sensitised" the worker for all later employments of that kind. If s15 of the 1987
Act (and before it s7(4) of the 1926 Act) had not been there, his Honour's
determination would have been rational and unassailable. At least it would have
been incapable of being corrected in an appeal limited, relevantly, to a point of
law. With respect, that approach overlooked the semi-arbitrary but very practical
purposes of s15 of the 1987 Act. That section obliged the Court to do what
Commissioner Grayson in the initial hearing did, ie, to fix Theiss Watkins White
(Constructions) Pty Ltd (Theiss) with liability, as the last employer. That
employer was no florist shop, but another employer in the bricklaying industry in
whose employ the worker was exposed to the allergen which, once again,
triggered off his dermatitis. It was therefore an employer which fell within the
terms of s15(1)(b) of the 1987 Act. It was the employer by whom compensation
was payable. Because the previous relevant employment (ie by Clover
Bricklaying Pty Ltd) concluded on 14 August 1985, more than one year before
Theiss employed the worker, no basis for contribution under s15(2) arose.
Unfortunately for it, Theiss had to accept the liability for paying weekly
compensation, so long as the worker was incapacitated within the meaning of the
Act.