Labour Theory Of Value

Refreshed October 19, 2026 · Earlier versions

What changed on October 19, 2026

The mainstream view now frames the transformation problem more specifically (Böhm-Bawerk, Bortkiewicz, Samuelson), mentions Sraffa's neo-Ricardian alternative, and acknowledges that heterodox defenders treat LTV as a theory of exploitation rather than of day-to-day prices; the earlier version did not cover this.
The alternative views dropped the Energy Theory (Technocracy), Neo-Mutualist cost-price, Post-Operaist General Intellect and Biophysical Entropy perspectives.
New alternative views were added: the Marxist New Interpretation (Duménil, Lévy, Foley) claiming exploitation without a transformation step, and value-form theory (Postone, Heinrich) reading Marx as a critique of fetishism rather than a price theory.
The alternatives now include an extension of value theory to AI, platforms and unpaid digital labour, plus a Sraffian and Austrian critique saying labour value is redundant or wrong.

Mainstream views

Mainstream economics rejects it as an explanation of prices

The labour theory of value (LTV), developed by Adam Smith and David Ricardo and made central by Karl Marx, holds that a good's value is set by the labour needed to produce it. Since the 1870s 'marginalist revolution' (Jevons, Menger, Walras), most economists have explained prices through marginal utility, scarcity and supply and demand. A product's value depends on how much buyers want one more unit and on what it costs to produce. It does not depend on the labour embodied in it. Hours of labour spent on something nobody wants create no value, which shows the theory's central weakness. A recent simplypsychology.org overview describes this marginal-utility critique as the standard counterargument.

Internal and empirical problems, such as the transformation problem

Critics note that capital-intensive and labour-intensive industries would earn different profit rates if prices tracked labour content. Yet competition tends to equalise profit rates. Marx's attempted solution, the 'transformation problem', was shown by Böhm-Bawerk and later formalised by Bortkiewicz and Samuelson to be logically problematic. Heterogeneous labour, differences in skill and the role of capital and land also make 'socially necessary labour time' hard to measure. Neo-Ricardian work, such as Sraffa's, can model prices without it.

Still valued as intellectual history and in heterodox schools

The LTV remains important for understanding classical political economy and the Marxian critique of capitalism. Marxian and some post-Keynesian economists defend it as a theory of exploitation and of the class structure of income distribution. They do not claim it explains day-to-day prices. Mainstream scholars also credit it with drawing attention to labour's role in production and distribution. Reference works such as the wikipedia.org entry present it as a historically influential theory that has been largely superseded.

Conclusion

The mainstream view is that the labour theory of value is an historically important but outdated theory of price. Marginal utility and supply-and-demand analysis replaced it, and it has persistent logical and empirical difficulties. It lives on mainly in Marxian and heterodox economics and in the history of economic thought.

Alternative views

Value is created in exchange and exploitation is real: the New Interpretation

Some Marxists drop the idea that labour hours fix prices. They define labour value as the share of total labour time that a worker's money wage can command, and they claim exploitation can be shown without a price-from-value transformation. Their argument is that the old transformation problem is a pseudo-problem, and that the theory still explains why profit exists. Workers get back less labour time in goods than they spend working.

Attributed to: Gérard Duménil and Dominique Lévy, the 'New Interpretation' of Marx, developed with Duncan Foley.

Value is socially necessary abstract labour, not a measure of hours (value-form theory)

On this reading, Marx was not offering a Ricardian theory of price. He was analysing why capitalist societies treat labour as an abstract, commodity-mediated social substance. Value is a social form that appears only through market exchange, so the question 'do hours predict prices?' misses the point. The view treats the labour theory of value as a critique of fetishism, not as a rival to marginalism.

Attributed to: Moishe Postone (Time, Labor, and Social Domination), Michael Heinrich, and the Neue Marx-Lektüre tradition.

Value theory extends to AI, platforms and unpaid digital labour

Some scholars argue the theory is newly relevant. They say user data, content moderation, data labelling and platform work are labour that creates value for firms, often without a wage. Automation and AI raise a further question: if living labour is displaced, where does surplus value come from? Some answer that AI embeds past human labour, such as the text and images used for training, so its output is 'dead labour' appropriated from many workers. A recent nature.com result discusses extending the theory to AI and digital platforms.

Attributed to: Christian Fuchs (digital labour theory) and Tiziana Terranova (free labour). The Humanities and Social Sciences Communications article is a recent example of this extension. I am unsure which individual authors hold each specific claim.

Labour is one input among many: the Sraffian and subjective critiques say it is redundant or wrong

Neo-Ricardians hold that prices and profits can be derived from physical production data and the wage or profit rate, with no detour through labour values. Austrian economists say value is subjective and depends on marginal utility, so labour-hours cannot be its source. Both camps agree the theory is unnecessary, though for different reasons. Böhm-Bawerk's critique of Marx remains the classic Austrian statement, and a thedispatch.com result gives a popular conservative version of it.

Attributed to: Piero Sraffa and Ian Steedman (Sraffians); Eugen von Böhm-Bawerk and Ludwig von Mises (Austrian school); Jonah Goldberg of The Dispatch.

Common ground

What both sides accept, and the questions they actually split on.

Where they agree

The labour theory of value was developed by classical political economists and made central by Marx, and it remains important for understanding that tradition.
Prices and profits can be modelled without deriving them from labour hours, as Sraffian work shows.
Böhm-Bawerk's critique of Marx is a classic and influential challenge to the theory.
The theory is tied to questions of exploitation and the distribution of income between classes.

Where they part ways

Is the labour theory of value a valid explanation of prices?

MainstreamIt is an outdated theory of price that marginal utility and supply and demand have replaced, because the labour embodied in a good does not determine its value.

AlternativeMany Marxist readings say it was never a Ricardian price theory, so asking whether hours predict prices misses the point, while Sraffian and Austrian critics call it redundant or wrong.
Is the transformation problem a fatal flaw?

MainstreamThe transformation problem, shown to be logically problematic by Böhm-Bawerk, bortkiewicz and Samuelson, is a persistent internal difficulty for the theory.

AlternativeThe New Interpretation holds that it is a pseudo-problem, since exploitation can be shown without transforming values into prices.
What is value and what is the theory for?

MainstreamValue is mainly a matter of price, set by marginal utility and costs, and the theory survives chiefly as a heterodox account of exploitation and class income distribution.

AlternativeValue-form theorists treat it as a social form of abstract labour that appears through exchange, and the theory is a critique of fetishism rather than a rival to marginalism.
Is the theory relevant to modern digital and AI economies?

MainstreamIt is treated as historically influential but largely superseded, and it is not used to explain how today's prices are set.

AlternativeSome scholars say it is newly relevant because unpaid digital labour and the past labour embedded in AI create value that firms appropriate.

Your verdict

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References

Smith, A. (1776). An Inquiry into the Nature and Causes of the Wealth of Nations.
Ricardo, D. (1817). On the Principles of Political Economy and Taxation.
Samuelson, P. A. (1971). Understanding the Marxian Notion of Exploitation: A Summary of the So-Called Transformation Problem. Journal of Economic Literature, 9(2).
Böhm-Bawerk, E. von (1896). Karl Marx and the Close of His System.
Stanford Encyclopedia of Philosophy: Marx's Economic Theory / Analytical Marxism entries.
Labor theory of value - Wikipedia
Labor Theory Of Value (Marx) - Simply Psychology

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