The history of the relevant New South Wales legislation is set out in the judgment of Evatt J. 1.
Macaskie K.C. and Valentine Holmes, for the appellant. Cave K.C. and Shakespeare, for the respondent.
SIR SIDNEY ROWLATT delivered the judgment of their Lordships, which was as follows :-
This is an appeal from a decision (1) of the High Court of Australia reversing a decision 2 of the Supreme Court of New South Wales on a case stated under the provisions of the Workers' Compensation Act 1926-1929, sec. 37 (4), at the request of the appellant company, by the Workers' Compensation Commission of New South Wales.
The only question for determination is whether an applicant for compensation under the Act must in order to establish his claim not only prove that he has contracted a disease arising out of and in the course of his employment, but go on to prove that it was not caused by silica dust (in which case the employer would not be liable) or whether it suffices for him to prove the first proposition only, leaving it to the employer to show, if he can, that the disease was due to silica dust. It is a short though important question of construction relating to the onus of proof.
The directly relevant sections are as follows :- Sec. 7 (1).-" A worker who has received an injury whether at or away from his place of employment (and in the case of the death of the worker, his dependants) shall receive compensation from his employer in accordance with this Act."
Sec. 6 (1).-" In this Act unless the context or subject matter otherwise indicates or requires
'Injury' means personal injury arising out of and in the course of the employment and includes a disease SO arising whether of sudden onset or of such a nature as to be contracted by gradual process other than a disease caused by silica dust."
Sec. 5.-" Nothing in this Act shall affect the operation of the Workmen's Compensation (Silicosis) Act 1920, as amended by this Act."
1(1934) 50 C.L.R., at pp. 626, 627. 2(1933) 34 S.R. (N.S.W.) 206 ; 51 W.N. (N.S.W.) 44.