Since the level of rent is fixed by forces outside the control of labourers, employers, or landowners, the receivers thereof would be unable to offset its decreased purchasing power by increasing its amount. However, this situation would not be inherently unjust, nor even inequitable. Like interest, rent is a "workless" income, and has only a presumptive and hypothetical justification. Therefore, the moral claim of the rent receiver to be protected against a decrease in the purchasing power of his income, is inferior to the moral claim of the labourer to use his economic power for the purpose of improving his condition beyond the limits of welfare fixed by the "equitable minimum." What is true of the rent receiver in this respect applies likewise to the case of the capitalist. As we saw a few pages back, the wage earners are morally free to take this course at the expense of interest. Evidently they may do the same thing when the consequence is merely a diminution in its purchasing power. To be sure, if capital owners should regard their sacrifices in saving as not sufficiently rewarded, owing either to the low rate or the low purchasing power of interest, they would be free to diminish or discontinue saving until the reduced supply of capital had brought about a rise in the rate of interest. Should they refrain from this course they would show that they were satisfied with the existing situation. Hence they would suffer no wrong at the hands of the labourers who forced up wages at the expense of prices.