The economic foundation of class exploitation — how wages disguise the theft of labour
Wage labour is the defining economic relationship of capitalism. The worker, who owns no means of production — no factory, no land, no machinery — has only one thing to sell: their capacity to work, their labour-power. The capitalist purchases this labour-power for a definite period of time and sets the worker to work producing commodities whose value exceeds the wages paid.
This transaction appears on the surface as a free and equal exchange. The worker receives wages; the capitalist receives labour. But beneath this appearance lies the fundamental mechanism of exploitation. The worker produces more value than they receive in return — and this surplus is the source of all capitalist profit.
Marx first elaborated this analysis in his 1847 lectures, later published as Wage Labour and Capital, which remains one of the clearest introductions to the political economy of capitalism.
"Labour-power is, therefore, a commodity which its possessor, the wage-worker, sells to the capitalist. Why does he sell it? It is in order to live."
— Karl Marx, Wage Labour and Capital (1847)Bourgeois economists present wages as the natural price of labour, determined by supply and demand. This is superficial. Marx showed that the value of labour-power — like any other commodity — is determined by the labour-time necessary for its production and reproduction. In practical terms, wages tend toward the cost of keeping the worker alive, housed, fed, and able to reproduce the next generation of workers.
This does not mean wages are always at bare subsistence. The value of labour-power includes a historical and cultural element — workers in different countries and different periods have different customary standards of living. But the tendency of capital is always to press wages downward, to extract the maximum surplus from each worker.
The value of labour-power is the cost of reproducing the worker: food, shelter, clothing, education, healthcare, and the raising of children who will become the next generation of workers. Wages are not payment for the full value of the worker's labour — they are payment for the worker's capacity to labour.
This is one of Marx's most important contributions to political economy and the key to understanding exploitation. The capitalist does not buy labour — they buy labour-power, the capacity to work for a given period. The difference is decisive.
Suppose a worker is paid wages equivalent to six hours of labour-time. But the worker does not stop working after six hours — they work eight, ten, or twelve hours. The value produced during the surplus hours — beyond what is necessary to reproduce their own labour-power — is surplus value, and it is appropriated entirely by the capitalist.
This is the secret of capitalist exploitation. The worker is not paid for their labour. They are paid for their labour-power. The capitalist then extracts more labour than they pay for. The transaction is legal, contractual, and entirely exploitative.
Capital is not simply money or machinery. It is a social relation. Capital is accumulated labour that has been appropriated by the capitalist class and is used to extract further surplus value from living labour. A machine is not capital in itself — it becomes capital only when it is owned by a capitalist and used in the exploitation of wage labour.
Marx distinguished between constant capital (raw materials, machinery, buildings — which transfer their existing value to the product) and variable capital (wages — which is the only source of new value). Only living labour creates new value. Machines and raw materials merely pass on the value already embodied in them.
Capital is not a thing — it is a social relation of production. It is dead labour (accumulated past labour embodied in machines and materials) that dominates and exploits living labour (the current workforce). The accumulation of capital is simultaneously the accumulation of misery for the working class.
"Capital is dead labour, that, vampire-like, only lives by sucking living labour, and lives the more, the more labour it sucks."
— Karl Marx, Capital, Volume I (1867)Bourgeois ideology insists that workers and capitalists share a common interest — that what is good for business is good for workers. This is a lie. The interests of capital and labour are fundamentally opposed.
For the capitalist, wages are a cost to be minimised. Every penny paid in wages is a penny less in profit. For the worker, wages are the means of survival. The capitalist wants to extend the working day, intensify the pace of work, and reduce wages. The worker wants shorter hours, better conditions, and higher pay.
This is not a matter of individual greed or good will. It is a structural antagonism built into the very foundations of the capitalist mode of production. No amount of collective bargaining, welfare reform, or corporate social responsibility can overcome this fundamental contradiction. It can only be resolved by abolishing the wage-labour relationship itself — by socialising the means of production and establishing a planned economy under workers' control.
Marx made a crucial distinction between nominal wages, real wages, and relative wages. Nominal wages may rise over time — workers may earn more pounds or euros than their grandparents. Real wages (adjusted for inflation) may also rise somewhat. But relative wages — the worker's share of the total value produced — tend to decline.
This means that even as workers become more productive and create more wealth, a shrinking share of that wealth goes to wages and a growing share goes to profit. The worker may have a smartphone and a television, but the capitalist has a yacht, a private jet, and a growing share of the national income. This is what Marx meant by the increasing immiseration of the working class — not absolute destitution (though this exists too) but a growing gap between what workers produce and what they receive.
Capitalism necessarily produces a permanent pool of unemployed workers — what Marx called the industrial reserve army. This is not a failure of the system; it is a requirement. Unemployment keeps wages down by ensuring that for every worker employed, there are others desperate for any job at any wage.
The reserve army fluctuates with the business cycle — swelling during crises and contracting during booms — but it never disappears. It is a structural feature of capitalism, produced by the same mechanism that generates profit: the constant drive to replace living labour with machinery, to increase the organic composition of capital.
Today, the reserve army includes not only the officially unemployed but the underemployed, the precariously employed, the gig workers, and the millions who have given up looking for work altogether. Every worker's job insecurity is another worker's permanent exclusion from employment — and both serve the interests of capital.
The wage-labour relationship is the economic foundation of capitalist class rule. To overthrow capitalism means to abolish wage labour — not merely to raise wages or improve conditions, but to transform the entire mode of production so that the producers collectively own and control the means of production.
Under socialism, the products of labour belong to society as a whole, distributed according to the planned needs of the community. There is no capitalist to appropriate surplus value, no reserve army to discipline workers with the threat of starvation, no structural antagonism between those who work and those who own.
This is not a utopian dream. It is the logical consequence of Marx's analysis of capitalism. The very development of capitalism — the socialisation of production, the creation of a massive, educated, organised working class — creates the material conditions for its own overthrow.
Explore the economic foundations of Marxism-Leninism and the science of exploitation.