The Labor Theory of Value (LTV) is an economic theory that states the value of a commodity is determined by the total amount of “socially necessary labor time” required for its production.
This value isn’t just about the physical effort, but also includes the labor embedded in the tools and materials used. Proponents of the LTV believe that this “socially necessary labor” serves as a kind of objective measure for a good’s value.
The theory is most closely associated with Karl Marx, but its origins can be traced to earlier classical economists like Adam Smith and David Ricardo.
They used it to explain the long-term, or “natural,” price of goods in an economy.
Key Concepts and Development
The LTV evolved significantly over time. Here are the key ideas from its main proponents:
Adam Smith
Smith, in his work The Wealth of Nations, introduced a version of the LTV to describe a “rude and early state” of society without class distinctions or capital. In this hypothetical state, the exchange value of goods would be directly proportional to the labor time required to produce them. For example, if it takes twice as long to hunt a beaver as it does to hunt a deer, then one beaver would be worth two deer. However, Smith acknowledged that in more developed societies with capital and land ownership, prices are also influenced by rent and profit, complicating the simple labor-for-labor exchange.
David Ricardo
Ricardo expanded on Smith’s ideas, arguing that even in a capitalist society, the relative prices of most reproducible goods are still governed by the labor required to produce them. He saw the LTV as the “foundation” of exchange value, with short-term market prices fluctuating around this labor-determined “natural price.”
Karl Marx
Marx used the LTV as the cornerstone of his critique of capitalism. He distinguished between use-value (a commodity’s utility or usefulness) and exchange-value (its value in the market). For Marx, labor is the only source of new value. The capitalist, in a process he called exploitation, purchases a worker’s “labor-power” (the ability to work) but pays them only what is necessary to reproduce that labor-power (their wages). The value the worker creates beyond this amount is “surplus value,” which is appropriated by the capitalist as profit. This surplus value is, according to Marx, the ultimate source of capitalist profit and the basis of class conflict.
Criticisms
Modern mainstream economics largely rejects the LTV in favor of the subjective theory of value, which posits that a good’s value is determined by its utility to an individual consumer.
Major criticisms of the LTV include:
- Subjective Value: The subjective theory of value argues that value isn’t an inherent quality of an object but a subjective assessment made by a consumer. A diamond may take a lot of labor to produce, but its value is high because people desire it, not simply because of the labor. A mud pie, regardless of the labor poured into it, has no value because no one wants it.
- The Problem of Non-Labor Inputs: Critics point out that many valuable commodities, such as uncultivated land or rare works of art, have value that isn’t directly related to the labor involved in their production. The LTV struggles to account for these without complex explanations.
- Skill and Intensity: The LTV relies on the concept of “socially necessary” labor. This raises the question of who decides what is “socially necessary” and how to account for different levels of skill, intensity, or the use of advanced technology. A more productive worker or a better machine will produce more in the same amount of time, but the LTV’s core premise suggests the value per unit should be the same.
- Circular Reasoning: Critics argue that the LTV can be a form of circular reasoning, as it often defines “socially necessary” labor based on whether a product is successful in the market, which itself is a measure of value.
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