Unit 3: Marxian Economic Thought

I. Orientation

Marxian economics is the critical analysis of capitalist production developed principally by Karl Marx (1818–1883), especially in Capital, Volume I (1867). Its governing principle is that capitalism is a historically specific social system in which production is organized through private ownership, wage labour, commodity exchange, and the pursuit of profit. Marx examines not only prices and markets but also the social relations and conflicts concealed behind them.

• Historical materialism: Economic structures influence law, politics, institutions, and dominant ideas; these structures change through contradictions and class conflict.
• Capitalist production: Production is undertaken primarily to obtain monetary profit, not simply to satisfy direct human needs.
• Wage labour: Workers sell their capacity to work, or labour-power, to owners of the means of production.
• Means of production: Land, machinery, buildings, technology, and raw materials are controlled mainly by the capitalist class.
• Class structure: Capitalism is principally divided between bourgeoisie, who own capital, and proletariat, who must sell labour-power.
• Value and exchange: Commodities appear as market objects, but their exchange relations express underlying social labour.
• Contradiction: Capitalism expands productive capacity while generating exploitation, inequality, instability, and recurring crises.

II. Marx’s critique of classical economics — political economy as a social critique

Marx accepted classical economists’ concern with production, distribution, and economic growth, but argued that they treated capitalist relations as natural and permanent rather than historically specific.

A. Marx's critique of classical economics

Marx’s critique shows that classical economics identified important mechanisms but concealed the social relations on which those mechanisms depended.

• Historical limitation: Adam Smith and David Ricardo analyzed labour, value, and distribution, but often presented capitalism as a general form of economic organization. Marx argued that wage labour and private capital emerged historically and could therefore also disappear.
• Labour and value: Ricardo came close to a labour-based explanation of value, but Marx distinguished between labour itself and labour-power, the worker’s capacity to labour. This distinction explains how profit arises without assuming that workers are openly cheated in every exchange.
• Class relations: Classical distribution theory divides income into wages, profit, and rent. Marx asks who owns productive assets and therefore controls production.
• Appearance versus reality: The wage contract appears legally equal: workers receive wages and capitalists receive labour. Yet the worker can produce more value during the working day than the value represented by the wage.
• Capital as a social relation: A machine is not capital merely because it is productive. It becomes capital when it is owned and used to command labour for the expansion of value.
• Commodity fetishism: Market relations make social relations appear as relations between things. For example, the price of a coat conceals the labour and social cooperation involved in producing it.

III. Commodity — the elementary form of capitalist wealth

A commodity is a product made for exchange rather than solely for the producer’s direct use. Marx begins with the commodity because capitalist wealth appears as an immense collection of commodities.

A. Commodity

The commodity unites a useful material form with a social exchange form.

• Use: A coat protects against cold, while bread satisfies hunger; each has a concrete function that makes it useful.
• Exchange: A commodity is produced for sale and enters a relation with other commodities, such as one coat exchanging for two pairs of shoes.
• Dual character: Every commodity has use value and value. Its physical usefulness differs from the abstract social labour represented in exchange.
• Private production: Producers work independently, but their products become socially connected only through market exchange.
• Contradiction: Production is private, while satisfaction of social needs is mediated collectively through the market. This can produce unsold goods alongside unmet needs.
• Money form: Money serves as the universal equivalent through which the values of different commodities are expressed in prices.

B. Use value and exchange value

Use value refers to usefulness, while exchange value refers to the quantitative relation in which one commodity exchanges for another.

• Use value: It depends on the physical properties and socially recognized function of a good. A kilogram of rice and a laptop have different use values.
• Exchange value: It is the proportion in which commodities exchange, such as 1 coat = 20 metres of linen. This ratio can vary with social conditions.
• Common substance: Commodities with different physical uses can be compared because they embody abstract human labour.
• Not identical to price: Price is the money expression of value. Market prices may rise above or fall below value because of demand, supply, monopoly, and competition.
• Historical character: Use values exist in many societies, but generalized exchange value and commodity production become dominant under capitalism.

IV. Value — socially necessary labour and capitalist exchange

Marx’s theory of value explains why unlike commodities can be quantitatively compared. Value is not determined by an individual producer’s effort but by socially necessary labour time.

A. Theory of value

The theory states that the value of a commodity is determined by the socially necessary abstract labour required to produce it under prevailing conditions.

Value of commodity ∝ socially necessary labour time

Here, “socially necessary labour time” means the average time required with normal technology, skill, and intensity to produce the commodity.

• Abstract labour: Different concrete activities—spinning, sewing, mining—are reduced in exchange to expenditure of human labour in general.
• Socially necessary time: If the average time to produce a table is 4 hours, a producer who takes 8 hours does not create twice the value.
• Productivity: When technology reduces production time from 4 hours to 2, the value of each table falls, assuming other conditions remain constant.
• Value and money: Money provides the visible form of value, although market prices can diverge from underlying values.
• Demand and supply: They affect price movements and whether labour is socially validated, but Marx’s value analysis concerns the foundation of exchange ratios.
• Limit: Value theory does not claim that every price always equals labour value; land, monopoly goods, financial assets, and fluctuations require additional analysis.

B. Use value and exchange value

The value relation becomes visible only through exchange, where the use values of commodities provide the material expression of their value.

• Paired dimensions: Use value is qualitative and useful; exchange value is quantitative and social.
• Example: If 1 coat exchanges for 20 metres of linen, the coat’s use value differs from linen’s, but both are treated as equivalent expressions of abstract labour.
• Capitalist importance: Capitalists purchase commodities for their exchange potential, while consumers generally seek their use values.
• Contradiction: A product must be useful to someone to sell, but production is guided by exchange and profit rather than need alone.

V. Surplus value — the source of capitalist profit

Surplus value is the excess value created by workers beyond the value of their labour-power and appropriated by the capitalist.

A. Surplus value

Surplus value arises because labour-power is a commodity whose use can create more value than is required to reproduce it.

Value of output = constant capital + variable capital + surplus value
                 = c + v + s

Here, c is machinery and materials whose existing value is transferred to output, v is wages paid for labour-power, and s is surplus value created by workers.

• Labour-power: Its value is determined by the socially necessary labour needed to produce and maintain the worker’s capacity to work, including food, clothing, housing, and training.
• Necessary labour: During part of the working day, workers produce value equivalent to their wages. If wages represent 4 hours, 4 hours are necessary labour.
• Surplus labour: If the working day lasts 8 hours, the remaining 4 hours produce surplus value for the capitalist.
• Rate of surplus value:

Rate of surplus value = s / v × 100

s is surplus value and v is variable capital. If s = 40 and v = 40, the rate is 100%.

• Absolute surplus value: It increases through a longer working day, such as extending work from 8 to 10 hours.
• Relative surplus value: It increases when productivity lowers the cost of workers’ means of subsistence, reducing necessary labour from 4 to 3 hours within the same working day.
• Equal exchange: The wage contract can be legally equal while exploitation occurs in production, because the worker sells labour-power, not a fixed quantity of completed labour.

VI. Theory of capitalist development: crisis and falling rate of profit — expansion through contradiction

Capitalism continually transforms production through accumulation, competition, technological change, and concentration of capital. These processes expand output but also generate tendencies toward crisis.

A. Theory of capitalist development: crisis and falling rate of profit

Marx’s account links capitalist development to accumulation, overproduction, realization problems, and a tendency for the rate of profit to decline.

• Accumulation: Profit is reinvested in machinery, raw materials, and labour-power, enlarging the scale of production.
• Organic composition: Competition encourages capitalists to substitute machinery for workers. The ratio of constant to variable capital therefore tends to rise.
• Rate of profit:

Rate of profit = s / (c + v) × 100

s is surplus value, c constant capital, and v variable capital. Since living labour creates new value and surplus value, a rising c relative to v can depress the rate of profit.

• Counteracting forces: Higher productivity, intensified exploitation, cheaper machinery, foreign trade, and expansion into new markets can offset or delay the decline.
• Overproduction: Capitalists produce for profitable sale, but wages are restrained because wages are a cost. The resulting gap between productive capacity and purchasing power can create unsold inventories.
• Realization crisis: Surplus value must be realized through sale. Value produced in factories does not become profit if commodities cannot be sold.
• Credit and speculation: Credit can postpone contradictions by expanding purchasing power, but excessive debt can deepen later financial and commercial crises.
• Destruction and restructuring: Crisis may devalue commodities, close firms, reduce wages, and destroy capital, temporarily restoring profitability while intensifying hardship.
• Tendency, not mechanical law: The falling rate of profit is a tendency operating alongside counteracting influences; Marx did not present every downturn as caused by one single factor.

VII. Class struggle — conflict over production and distribution

Class struggle is the conflict between groups with opposed positions in the organization of production. Under capitalism, the central conflict is between capitalists and wage workers.

A. Class struggle

Class struggle concerns control over labour, the working day, wages, technology, and the distribution of surplus value.

• Bourgeoisie: Capitalists own or control means of production and purchase labour-power in order to obtain profit.
• Proletariat: Workers lack sufficient productive property and must sell labour-power to obtain income.
• Economic conflict: Workers seek higher wages, shorter hours, and safer conditions; capitalists seek greater surplus value and competitive production costs.
• Working-day conflict: A reduction from 10 to 8 hours limits absolute surplus value, while management may respond through productivity increases or work intensification.
• Competition among capitalists: Individual firms pursue lower costs through machinery and labour discipline, even when these actions collectively contribute to unemployment or overproduction.
• Class consciousness: A class becomes politically organized when workers recognize common interests rather than viewing exploitation as an individual problem.
• State and law: Legal equality protects contracts and property, but the state may also regulate hours, wages, and conditions as a result of class pressure.
• Historical possibility: Marx viewed capitalism as dynamic rather than eternal. Its internal contradictions and organized class struggle could produce transformation toward a system in which producers collectively control production.
• Analytical dimension: Class is defined not simply by income but by a person’s relationship to the means of production and to the creation and appropriation of surplus value.