Domestic labour and Marx's theory of value
The value of labour-power is determined, as in the case of every other commodity, by the labour-time necessary for the production, and consequently also the reproduction, of this special article. So far as it has value, it represents no more than a definite quantity of the average labour of society incorporated in it. . . . Given the individual, the production of labour-power consists in his reproduction of himself or his maintenance. For his maintenance he requires a given quantity of the means of subsistence. Therefore the labour-time requisite for the production of labour-power reduces itself to that necessary for the pro duction of those means of subsistence; in other words, the value of labour-power is the value of the means of sub sistence necessary for the maintenance of the labourer (1974a, p. 167).