Maintenance and support for this purpose will not be the same concept as is relevant in legislation as to testator's family maintenance or in matrimonial causes. The relationship of expenditure on the maintenance and support of the claimant to the earnings of a worker must, in any case, circumscribe the area denoted by the expression, which is to a degree imprecise. The expenditure which in my opinion, is comprehended by it is, I think, related to the provision of the necessities of life having regard to the manner in which the worker's household in which the claimant to dependency has participated lived. Such a view is, in my opinion, consistent with the speeches of the House in Main Colliery Co. Ltd. v. Davies [1] That does not involve setting up some standard as a level of expenditure by reference to which support or maintenance can be referred. But the words "maintenance and support" do involve, in my opinion, the idea that there are some expenditures by the worker's household which are not expenditures for the support and maintenance of that household or of its members, though made out of the worker's earnings. Thus, if, as I think is the case, a wife does not cease to be wholly dependent on the earnings of her husband because she expends some income of her own, irrespective of how she may employ it, there must arise in each case the question whether some use of her private income has made her less than wholly dependent in respect of her support and maintenance on the earnings of her husband. No doubt there may arise cases in which the private income of a wife has been used to lift the living standard of the family and to increase the area of expenditure which could properly be said to be expenditure for the support or maintenance of the household, including the wife. But I should imagine that such cases under worker's compensation legislation would be extremely rare. It would be unwise, in my opinion, to determine what is total dependency in terms appropriate to the necessary exclusion of such a wife from total dependency. It may be a difficult matter to decide in point of fact whether or not total dependency on the husband's earnings exists in such a case. But it must be decided by answering the question whether she relied for her maintenance and support as distinct from all the advantages she may have or enjoy entirely on the earnings of her husband.