industrial methods as well as in the character of their labourers, the difference of money and of real wage is not commonly accompanied by a difference in hours of labour.
The evidence we possess does not warrant any universal or even general application of the theory of the economy of high wages. If it was generally true that by increasing wages and by shortening working hours the daily product of each labourer could be increased or even maintained, the social problem, so far as it relates to the alleviation of the poverty and misery of the lower grades of workers, would admit of an easy solution. But though it will be generally admitted that a rise of wages or of the general standard of comfort of most classes of workers will be followed by increased efficiency of labour, and that a shortening of hours will not be followed by a corresponding diminution in output, it by no means follows that it will be profitable to increase wages and shorten hours indefinitely. Just as it is admitted that the result of an equal shortening of hours will be different in every trade, so will the result of a given rise in standard of comfort be different. In some cases highly-paid labour and short hours will pay, in other cases cheaper labour and longer hours. It is not possible by dwelling upon the concomitance of high wages and good work, low wages and bad work, in many of the most highly-developed industries to appeal to the enlightened self-interest of employers for the adoption of a general rise in wages and a general shortening of hours. Because the most profitable business may often be conducted on a system which involves high wages for short intense work with highly evolved machinery, it by no means follows that other businesses may not be more profitably conducted by employing low-paid workers for long hours with simpler machinery. We are not at liberty to conclude that the early Lancashire mill-owners adopted a short-sighted policy in employing children and feeble adult labour at starvation wages.
The evidence, in particular, of Schulze-Gaevernitz certainly shows that the economy of high wages and short hours is closely linked with the development of machinery, and that when machinery is complex and capable of being worked at high pressure a net economy of high wages and short hours emerges. In this light modern machinery is seen as the direct cause of high wages and short hours. For though the object of introducing machinery is to substitute machine-tenders at low wages for skilled handicraftsmen, and though the tireless machine could be profitably worked continuously, when due regard is had to human nature it is found more profitable to work at high pressure for shorter hours and to purchase such intense work at a higher price. It must, of course, be kept in mind that high wages are often the direct cause of the introduction of improved machinery, and are an ever-present incentive to fresh mechanical inventions. This was clearly recognised half a century ago by Dr. Ure, who names the lengthened mules, the invention of the self-acting mule, and some of the early improvements in calico-printing as directly attributable to this cause.[232]
But, admitting these tendencies in certain machine industries, we are not justified in relying confidently upon the ability of a rise of wages, obtained by organisation of labour or otherwise, to bring about such improvements of industrial methods as will enable the higher wages to be paid without injuring the trade, or reducing the profits below the minimum socially required for the maintenance of a privately conducted industry.