In
Marxian economics
Marxian economics, or the Marxian school of economics, is a heterodox school of political economic thought. Its foundations can be traced back to Karl Marx's critique of political economy. However, unlike critics of political economy, Marxian ...
, the rate of exploitation is the ratio of the total amount of unpaid labor done (
surplus-value
In Marxian economics, surplus value is the difference between the amount raised through a sale of a product and the amount it cost to manufacture it: i.e. the amount raised through sale of the product minus the cost of the materials, plant and ...
) to the total amount of wages paid (the value of
labour power
Labour power (; ) is the capacity to work, a key concept used by Karl Marx in his critique of capitalist political economy. Marx distinguished between the capacity to do the work, i.e. labour power, and the physical act of working, i.e. labour. ...
). The rate of exploitation is often also called the rate of surplus-value.
Divergence of the two rates
Marx did not regard the rate of surplus value and the rate of exploitation as necessarily identical, ''insofar'' as there was a divergence between surplus value ''realised'' and surplus value ''produced''. Thus, the quantity of
surplus labour performed by workers in an enterprise might correspond to a value higher or lower than the surplus value actually ''realised'' as profit income upon sales of output. The implication is that if the gross profit volume was related to wage costs to establish the rate of surplus value, this might overstate or understate the real rate of labor-exploitation. Although this is a subtle point, it has sometimes played an important role in wage bargaining negotiations by
trade union
A trade union (British English) or labor union (American English), often simply referred to as a union, is an organization of workers whose purpose is to maintain or improve the conditions of their employment, such as attaining better wages ...
s. For an extreme example, workers might work extremely hard in an enterprise which nevertheless operates at a loss. For another extreme example, workers might work less hard, knowing that their product will sell like hotcakes in a seller's market at sharply inflated prices, yielding profits disproportionate to labour input. The divergence between surplus value ''realised'' and surplus value ''produced'' becomes even more marked if surplus value is viewed in terms of the net incomes of
social classes
A social class or social stratum is a grouping of people into a set of hierarchical social categories, the most common being the working class and the capitalist class. Membership of a social class can for example be dependent on education, ...
, i.e. net labor income and net property income. Marx identified five different formulae for the rate of surplus value (see
surplus value
In Marxian economics, surplus value is the difference between the amount raised through a sale of a product and the amount it cost to manufacture it: i.e. the amount raised through sale of the product minus the cost of the materials, plant and ...
).
See also
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Exploitation of labour
Exploitation is a concept defined as, in its broadest sense, one agent taking unfair advantage of another agent. When applying this to labour (or labor), it denotes an unjust social relationship based on an asymmetry of power or unequal exchange ...
*
Marginal product of labor
*
Rate of profit
In economics and finance, the profit rate is the relative profitability of an investment project, a capitalist enterprise or a whole capitalist economy. It is similar to the concept of rate of return on investment.
Historical cost ''vs.'' mark ...
*
Technological unemployment
The term technological unemployment is used to describe the loss of jobs caused by technological change. It is a key type of structural unemployment. Technological change typically includes the introduction of labour-saving "mechanical-muscle" ...
References
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Marxian economics
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