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.

Our evidence leads to the conclusion that, while a rise of wages is nearly always attended by a rise of efficiency of labour and of the product, the proportion which the increased productivity will bear to the rise of wage will differ in every employment. Hence it is not possible to make a general declaration in favour of a policy of high wages or of low wages.

§ 5. The economically profitable wages and hours will vary in accordance with many conditions, among the most important being the development of machinery, the strain upon muscles and nerves imposed by the work, the indoor and sedentary character of the work, the various hygienic conditions which attend it, the age, sex, race, and class of the workers.

In cotton-weaving in America it pays better to employ women at high wages to tend six, seven, or even eight looms for short hours, than to pay lower wages to inferior workers such as are found in Germany, Switzerland, or even in Lancashire. But in coal-mining it appears that the American wages are economically too high—that is to say, the difference between American and English wages is not compensated by an equivalent difference of output. The gross number of tons mined by United States miners working at wages of $326 per annum is 377, yielding a cost of 86-1/2 cents per ton, as compared with 79 cents per ton, the cost of North Staffordshire coal produced by miners earning $253, and turning out 322 tons per head.[233] So also a ton of Bessemer pig iron costs in labour about 50 cents more in America than in England, the American wages being about 40 per cent. higher.[234]

It is, indeed, evident from the aggregate of evidence that no determinable relation exists between cost in labour and wages for any single group of commodities.

Just as little can a general acceptance be given to the opposite contention that it is the increased efficiency of labour which causes the high wages. This is commonly the view of those business men and those economists who start from the assumption that there is some law of competition in accordance with whose operation every worker necessarily receives as much as he is worth, the full value of the product of his labour. Only by the increased efficiency of labour can wages rise, argue these people; where wages are high the efficiency of labour is found to be high, and vice versâ; therefore efficiency determines wages. Just as the advocates of the economy of high-wages theory seek by means of trade-unionism, legislation, and public opinion to raise wages and shorten hours, trusting that the increased efficiency which ensues will justify such conduct, so the others insist that technical education and an elevation of the moral and industrial character of the workers must precede and justify any rise of wages or shortening of hours, by increasing the efficiency of labour. Setting aside the assumption here involved that the share of the workers in the joint product of capital and labour is a fixed and immovable proportion, this view rests upon a mere denial of the effect which it is alleged that high wages and a rise in standard of comfort have in increasing efficiency.

The relation between wages and other conditions of employment, on the one hand, and efficiency of labour or size of product on the other, is clearly one of mutual determination. Every rise in wages, leisure, and in general standard of comfort will increase the efficiency of labour; every increased efficiency, whether due directly to these or to other causes, will enable higher wages to be paid and shorter hours to be worked.

§ 6. One further point emerges from the evidence relating to efficiency and high wages. According to Schulze-Gaevernitz's formula, every fall in piece wages is attended by a rise in weekly wages. But it should be kept in mind that a rise in time wages does not necessarily mean that the price of labour measured in terms of effort has been raised. Intenser labour undergone for a shorter time may obtain a higher money wage per unit of time, but the price per unit of effort may be lower. It has been recognised that a general tendency of the later evolution of machinery has been to compress and intensify labour. In certain classes of textile labour the amount of muscular or manual labour given out in a day is larger than formerly. This is the case with the work of children employed as piecers. In Ure's day (1830) he was able to claim that during three-fourths of the time spent by children in the factory they had nothing to do. The increased quantity of spindles and the increased speed have made their labour more continuous. The same is true of the mule spinners, whose labour, even within the last few years, has been intensified by increased size of the mule. Though as a rule machinery tends to take over the heavier forms of muscular work, it also tends to multiply the minor calls upon the muscles, until the total strain is not much less than before. What relief is obtained from muscular effort is compensated by a growing strain upon the nerves and upon the attention. Moreover, as the machinery grows more complex, numerous, and costly, the responsibility of the machine-tender is increased. To some considerable extent the new effort imposed upon the worker is of a more refined order than the heavy muscular work it has replaced. But its tax upon the physique is an ever-growing one. "A hand-loom weaver can work thirteen hours a day, but to get a six-loom weaver to work thirteen hours is a physical impossibility."[235] The complexity of modern machinery and the superhuman celerity of which it is capable suggest continually an increased compression of human labour, an increased output of effort per unit of time. This has been rendered possible by acquired skill and improved physique ensuing on a higher standard of living. But it is evident that, where it appears that each rise in the standard of living and each shortening of the working-day has been accompanied by a severer strain either upon muscles, nerves, or mental energy during the shorter working day, we are not entitled to regard the higher wages and shorter hours as clear gain for the worker. Some limits are necessarily imposed upon this compressibility of working effort. It would clearly be impossible by a number of rapid reductions of the working day and increases of time wages to force the effectiveness of an hour's labour beyond a certain limit for the workers. Human nature must place limits upon the compression. Though it may be better for a weaver to tend four looms during the English factory day for the moderate wage of 16s. a week than to earn 11s. 8d. by tending two looms in Germany for twelve hours a day, it does not follow that it is better to earn 20s. 3d. in America by tending six, seven, or even eight looms for a ten-hours day,[236] or that the American's condition would be improved if the eight-hours day was purchased at the expense of adding another loom for each worker.