“It very rarely happens that the nominal price of labour universally falls; but we well know that it frequently remains the same, while the nominal price of provisions has been gradually increasing. This is, in effect, a real fall in the price of labour; and during this period, the condition of the lower orders of the community must gradually grow worse and worse.” (Malthus 1798: 34–35).This appears in the Reverend Thomas Malthus’ (1766–1834) famous An Essay on the Principle of Population (which is available here) already in the first edition of 1798, but also in subsequent editions (e.g., Malthus 1803: 14–15).
Presumably money wages were not as inflexible downwards as they are today, but in Malthus’ time were apparently still relatively inflexible enough to merit comment as though this was reasonably well known.
Now the evidence would strongly suggest that in the mid-Victorian period money wages were rather more flexible than they are now, so, with the development of capitalism and the growth of a large class of urban workers (or what Marxists call the reserve army of labour, the body of unemployed and under-employed in capitalist society), had nominal wages become more flexible than in Malthus’ day?
At any rate, by the 1880s and 1890s we can see strong evidence that money wages, even if they had become more flexible by the 1860s, had attained a strong degree of inflexibility downwards, as discussed in these posts:
“Nominal Wage Rigidity in the US and the UK 1865/1880–1913,” December 16, 2014.BIBLIOGRAPHY
“UK Average Money Earnings 1880–1913,” December 14, 2014.
“British Money Wages in the 1873–1896 Deflation,” December 10, 2014.
Malthus, Thomas Robert. 1798. An Essay on the Principle of Population. J. Johnson, London.
https://archive.org/details/essayonprincipl00malt
Malthus, Thomas Robert. 1803. An Essay on the Principle of Population. J. Johnson, London.
https://archive.org/details/principleessayon00maltrich



