Productive and unproductive labor
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Productive and unproductive labour are concepts that were used in classical
political economy Political economy is the study of how economic systems (e.g. markets and national economies) and political systems (e.g. law, institutions, government) are linked. Widely studied phenomena within the discipline are systems such as labour ...
mainly in the 18th and 19th centuries, which survive today to some extent in modern
management Management (or managing) is the administration of an organization, whether it is a business, a nonprofit organization, or a Government agency, government body. It is the art and science of managing resources of the business. Management includ ...
discussions, economic sociology and Marxist or Marxian economic analysis. The concepts strongly influenced the construction of
national accounts National accounts or national account systems (NAS) are the implementation of complete and consistent accounting techniques for measuring the economic activity of a nation. These include detailed underlying measures that rely on double-entry ...
in the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
and other Soviet-type societies (see
Material Product System {{Soviet-type economics } Material Product System (MPS) refers to the system of national accounts used by 16 Leninist countries for different lengths of time, including the former Soviet Union and the Eastern Bloc countries (until around 1990), Cub ...
).


Classical political economy

The classical political economists, such as Adam Smith and
David Ricardo David Ricardo (18 April 1772 – 11 September 1823) was a British political economist. He was one of the most influential of the classical economists along with Thomas Malthus, Adam Smith and James Mill. Ricardo was also a politician, and a ...
, raised the economic question of which kinds of labour contributed to increasing society's wealth, as against activities which do not increase wealth. In the introduction to ''
The Wealth of Nations ''An Inquiry into the Nature and Causes of the Wealth of Nations'', generally referred to by its shortened title ''The Wealth of Nations'', is the '' magnum opus'' of the Scottish economist and moral philosopher Adam Smith. First published in ...
'', Smith spoke of the "annual labour" and "the necessaries and conveniences" a nation "annually consumes" before explaining that one of the two steps to increase wealth is reducing the amount of "unproductive labour". "Annual" and "annually" refer to a cyclical reproduction process; "unproductive labor" are commodities and services which are not inputs to the next economic cycle and are therefore lost to economic growth. In contrast, theories with no such time horizon tend to understand Smith's unproductive labor as referring to
services Service may refer to: Activities * Administrative service, a required part of the workload of university faculty * Civil service, the body of employees of a government * Community service, volunteer service for the benefit of a community or a p ...
, and productive labor as meaning vendible goods. Smith’s distinction between productive and unproductive labor corresponds to Sraffa’s (1960) distinction of basic and non-basic goods, as basic goods re-enter the productive process, whereas non-basic goods are destined for consumption, with no value for reproduction. As
Edwin Cannan Edwin Cannan (3 February 1861, Funchal, Madeira – 8 April 1935, Bournemouth), the son of David Cannan and artist Jane Cannan, was a British economist and historian of economic thought. He was a professor at the London School of Economics from 1 ...
observes,Cannan, Edwin (ed.), 1937, p. 1 note, Adam Smith, ''An Inquiry into the Nature and Causes of the Wealth of Nations'', N.Y.: Random House. Smith’s view of annual reproduction and as a consequence the distinction of productive and unproductive labor stems from his meeting, and the influence of, the French economists have known as the
Physiocrats Physiocracy (; from the Greek for "government of nature") is an economic theory developed by a group of 18th-century Age of Enlightenment French economists who believed that the wealth of nations derived solely from the value of "land agricultur ...
. Before his visit to France in his '' Theory of Moral Sentiments'' Adam Smith sees the gluttony of the landlords as an "invisible hand" which helps the poor to partake in the landlord's wealth. In ''The Wealth of Nations,'' it is seen as the consumption of unproductive labor, limiting the growth of wealth. Smith's view that human labour – but not unproductive labour – is the source of wealth reflects the classical position that all commodities can be reduced to actual labour and produced inputs which in turn resolve into labour and former inputs. Within an enterprise, for example, there were many tasks that had to be performed, such as cleaning, record keeping, and bookkeeping, and repairs, which did not directly contribute to producing and increasing wealth in the sense of making a net addition to it – in other words, such tasks represented a net cost to the enterprise which had to be minimized. There were also whole occupations such as domestic servants, soldiers, schoolteachers, etc. which, although necessary, did not seem "productive" in the sense of increasing the material wealth of a society. Part of the population consumed wealth but did not create it. To maximize economic growth, therefore, "unproductive costs" which consumed part of the total national income rather than adding to it should be "minimized''; productive labor had to be ''maximized''. Many different economic and moral arguments were made to either justify or else criticize the incomes gained from different activities, on the ground that they were "productive" or "unproductive", "earned" or "unearned", "wealth-creating" or "wealth-consuming".


Neoclassical economics

In
neoclassical economics Neoclassical economics is an approach to economics in which the production, consumption and valuation (pricing) of goods and services are observed as driven by the supply and demand model. According to this line of thought, the value of a good ...
, the distinction between productive and unproductive labour was however rejected as being largely ''arbitrary'' and irrelevant. All the
factors of production In economics, factors of production, resources, or inputs are what is used in the production process to produce output—that is, goods and services. The utilized amounts of the various inputs determine the quantity of output according to the rel ...
(land, labour and capital) create wealth and add value; they are all "productive". If the ''value'' of a good is just what somebody is its marginal utility, then regarding some activities as value-creating and others not is a purely subjective matter; ''any'' activity which produces anything, or generates an income, could be considered ''production'' and ''productive'', and the only question that remains is ''how'' productive it is. This could be measured by striking a ratio between the monetary value of output produced, and the number of hours worked to produce it (or the number of workers who produce it). This is called a "output/labour ratio". The ratio "
GDP Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced and sold (not resold) in a specific time period by countries. Due to its complex and subjective nature this measure is ofte ...
per capita" is also used by some as an indicator of how productive a population is. However, in calculating any output value, some concept of value is nevertheless required, because we cannot relate, group and aggregate prices (real or notional) at all without using a valuation principle. All accounting assumes a value theory, in this sense - we always need to distinguish conceptually the definition of value equivalence, comparable value, value transfer, loss of value, conservation of value and newly created value. For this purpose, a knowledge of prices is ultimately not sufficient, since the decision to group and categorize prices in a certain way involves criteria and valuations which themselves cannot be derived from prices. A persisting management preoccupation, particularly in large corporations, also concerns the question of which activities of a business are value adding. The reason is simply that value-adding activities boost gross income and profit margins (note that the "value-added" concept is a measure of the ''net'' output, or gross income, after deduction of materials costs from the total sales volume). If the aim is to realise maximum shareholder value, two important valuation problems occur. Firstly, productive assets being used in production have no actual market price, being withdrawn from the market and not offered for sale. They have at best an historic cost, but this cost does not apply to inventories of new output produced. The current value of productive assets can therefore be estimated only according to a probable price that they would have, ''if'' they were sold, or if they were replaced. Secondly, there is the problem of what exactly the increases or decreases in the value of productive assets being held can be attributed to. In what has become popularly known as "value-based management", these problems are pragmatically tackled with the accounting concepts of market-value added (MVA) and economic value-added (EVA). This style of management focuses very closely on how assets and activities contribute to maximum profit income.


National accounts

In
national accounts National accounts or national account systems (NAS) are the implementation of complete and consistent accounting techniques for measuring the economic activity of a nation. These include detailed underlying measures that rely on double-entry ...
and social accounting theory the concepts of productive and unproductive labour do survive to some extent. * The first reason is that if we want to estimate and account for the value of the net new output created by a country in a year, we must be able to distinguish between sources of ''new''
value added In business, total value added is calculated by tabulating the unit value added (measured by summing unit profit sale price and production cost">Price.html" ;"title="he difference between Price">sale price and production cost], unit depreciation ...
and ''conserved'' or ''transferred'' value. In other words, we need a ''value-theoretic principle'' which guides us in relating, grouping and computing price-aggregates. It is obvious that if products or incomes are merely ''exchanged'' or ''transferred'' between A and B, then the ''total'' product value, or total income, does not increase; all that has happened here is, that they have been shifted around, and ''redistributed''. Total wealth has not increased, no new value was added. By implication, some activities add new value, others do not. * Secondly, it is necessary to create an operational statistical coverage of '' Production, costs, and pricing, production'' itself, which can be used to allocate incomes, activities and transactions in the economy as either belonging to "production", or falling outside "production". Thus, some work ''produces'' something in the economic sense, other work does not. In general, national accounts adopt a very wide definition of production; it is defined as any activity of resident "institutional units" (enterprises, public services, households) combining the
factors of production In economics, factors of production, resources, or inputs are what is used in the production process to produce output—that is, goods and services. The utilized amounts of the various inputs determine the quantity of output according to the rel ...
(land, labour and capital) to transform inputs into outputs. This includes both market production as well as non-market production, if it recognisably generates an income. The advantage of the wide definition is, that practically all flows of production-related income can be captured (but at the same time a large amount of ''unpaid'' work -housework and voluntary work - is not accounted for). Nevertheless, some incomes are ruled out of production and regarded as ''transfers'' of wealth. A transfer is defined basically as a payment made or income received without providing any good, service or asset in return, for example: government benefits. Some forms of interest on loans, some property rents, and most
capital gains Capital gain is an economic concept defined as the profit earned on the sale of an asset which has increased in value over the holding period. An asset may include tangible property, a car, a business, or intangible property such as shares ...
on financial assets and property are also excluded, they are effectively transfers (flows of income and expenditure which are regarded as unrelated to Production, costs, and pricing, production and to the value of new output) or intermediate expenditure. * Thirdly, national accounts will show the contribution of different ''economic sectors'' to the total national product or national income. These sectors are mainly output-defined (e.g. agriculture, manufacturing, business services, government administration). It is therefore possible to distinguish to some extent between "productive" activities ''producing'' some tangible product or service, and other commercial or government activities which do not (yet generate incomes). A large amount of work done in society is not captured in national accounts, because it is unpaid voluntary labour or unpaid household labour. The monetary value of this work can be estimated only from
time use survey A time-use survey is a statistical survey which aims to report data on how, on average, people spend their time. Objectives The objective of the Time-Use survey is to identify, classify and quantify the main types of activity that people engag ...
s. Thus, national accounting definitions of "production" are strongly biased towards activities which yield a money-income.


Marx's critique

Karl Marx regarded land and labour as the source of all wealth, and distinguished between ''material'' wealth and ''human'' wealth. Human wealth was a wealth in
social relations A social relation or also described as a social interaction or social experience is the fundamental unit of analysis within the social sciences, and describes any voluntary or involuntary interpersonal relationship between two or more individuals ...
, and the expansion of market trade created ever more of those. However, wealth and economic ''value'' were not the same thing in his view; value was a purely social category, a social attribution. Both in ''
Das Kapital ''Das Kapital'', also known as ''Capital: A Critique of Political Economy'' or sometimes simply ''Capital'' (german: Das Kapital. Kritik der politischen Ökonomie, link=no, ; 1867–1883), is a foundational theoretical text in materialist phi ...
'' and in ''Theories of Surplus-Value'', Marx devoted a considerable amount of attention to the concept of "productive and unproductive labour". He sought to establish what economic and commercial ideas about productive labour would mean for the lives of the
working class The working class (or labouring class) comprises those engaged in manual-labour occupations or industrial work, who are remunerated via waged or salaried contracts. Working-class occupations (see also " Designation of workers by collar colo ...
, and he wanted to criticise apologetic ideas about the "productive" nature of particular activities. This was part of an argument about the source of surplus value in unpaid
surplus labour Surplus labour (German: ''Mehrarbeit'') is a concept used by Karl Marx in his critique of political economy. It means labour performed in excess of the labour necessary to produce the means of livelihood of the worker ("necessary labour"). The "su ...
. His view can be summarised in the following 10 points. * work is not "naturally productive", both in the sense that it takes work to make work productive, and that productive work depends on tools and techniques to be productive. * generally speaking, a worker is ''economically'' productive and a source of additional wealth to the extent that they can produce more than is required for their own subsistence (i.e., is capable of performing surplus-labour) and adding to a surplus product. * the definition of productive and unproductive labour is ''specific'' to each specific type of society (for example, feudal society, capitalist society, socialist society etc.) and depends on the given relations of production. * there exists no
neutral Neutral or neutrality may refer to: Mathematics and natural science Biology * Neutral organisms, in ecology, those that obey the unified neutral theory of biodiversity Chemistry and physics * Neutralization (chemistry), a chemical reaction in ...
definition of productive and unproductive labour; what is productive from the point of view of one social class may not be productive from the point of view of another. * the only
objective Objective may refer to: * Objective (optics), an element in a camera or microscope * ''The Objective'', a 2008 science fiction horror film * Objective pronoun, a personal pronoun that is used as a grammatical object * Objective Productions, a Brit ...
definition of productive labour is in terms of what is as a matter of fact productive within the conditions of a given
mode of production In the Marxist theory of historical materialism, a mode of production (German: ''Produktionsweise'', "the way of producing") is a specific combination of the: * Productive forces: these include human labour power and means of production (tools, ...
. * from the point of view of the
capitalist Capitalism is an economic system based on the private ownership of the means of production and their operation for profit. Central characteristics of capitalism include capital accumulation, competitive markets, price system, priva ...
class, labour is productive, if it increases the value of (private) capital or results in (private) capital accumulation. * ''Capitalistically productive labour'' is therefore labour which adds to the mass of surplus value, primarily through profitably producing goods and services for market sale. * no new value is created through acts of exchange only; therefore, although labour which just facilitates exchange is "productive" from the employer's point of view (because they derive profit from it), it is unproductive from the social point of view because it accomplishes only a transfer of wealth. This "unproductive" labour is accepted however because it reduces the costs of capital accumulation, or facilitates it, or secures it. * the definition of productive and unproductive labour is not static, but evolving; in the course of capitalist development, the division of labour is increasingly ''modified'', to make more and more labour productive in the capitalistic sense, for example through marketisation and privatisation, value-based management, and
Taylorism Scientific management is a theory of management that analyzes and synthesizes workflows. Its main objective is improving economic efficiency, especially labor productivity. It was one of the earliest attempts to apply science to the engineeri ...
. * whether work has been productive can really be known only "after the fact" in capitalist society, because commodity-producing living labour is in most cases definitely valued by the market only ''after'' it has been performed, when its product (a good or service) is exchanged and paid for. Marx accordingly made, explicitly or implicitly, 10 distinctions relevant to defining productive labour in a capitalist mode of production: * commodity production, versus other production * capitalist production versus non-capitalist production * production versus circulation (exchange) * production for profit, versus non-profit production * production of
use value Use value (german: Gebrauchswert) or value in use is a concept in classical political economy and Marxist economics. It refers to the tangible features of a commodity (a tradeable object) which can satisfy some human requirement, want or need, or ...
s, versus production of
exchange-value In political economy and especially Marxian economics, exchange value (German: ''Tauschwert'') refers to one of the four major attributes of a commodity, i.e., an item or service produced for, and sold on the market, the other three attributes be ...
s * production of value, versus appropriation of revenue * production of income, versus distribution of income In most cases, using these distinctions, it would be obvious whether the labour was capitalistically productive or not, but in a minority of cases it would be not altogether clear or controversial. In part, that is because the division of labour is not static but constantly evolving. The general criterion which Marx suggests is that: "If we have a function which, although in and for itself unproductive, is nevertheless a necessary moment of conomicreproduction, then when this is transformed, through a division of labour, from the secondary activity of many into the exclusive activity of a few, into their special business, this does not change the character of the function itself" (Capital Vol. 2, Penguin ed., p. 209). Obviously, functions falling outside capitalist production altogether would not be ''capitalistically'' productive. Generally, Marx seems to have regarded labour as mainly unproductive from the point of view of capitalist society as a whole, if it involved functions which have to do purely with: * the maintenance of a class-based social order as such (legal system, police, military, government administration). * the maintenance and securing of private property relations (police, security, legal system, banking, accounting, licensing authorities etc.). * operating financial transactions (in banking, financing, commercial trade, financial administration) * insurance and safety. * criminal activity. Such activities were an inevitable ''cost'' to capitalist society which had to be met from reserves and from current income. This didn't necessarily mean that unproductive functions are ''not socially useful'' or economically useful in some sense; they might well be, but they normally did not directly ''add'' net new value to the total social product, that was the point, they were a (necessary) financial cost to society, paid for by a ''transfer'' of value created by the productive sector. Thus, they represented an appropriation or deduction from the surplus product, and not a net addition to it. Obviously, unproductive activities could stimulate productive activities however (for example, the production of security installations). Many unproductive costs are accepted by business, either because they involve activities which lower total business costs, and thereby indirectly contribute to income, or because they are unavoidable in doing business. In the division of labour of modern advanced societies, unproductive functions in this Marxian sense occupy a very large part of the labour force; the wealthier a society is, the more "unproductive" functions it can afford. In the USA for example, one can calculate from labour force data that facilitating exchange processes and processing financial claims alone is the main activity of more than 20 million workers. Legal staff, police, security personnel and military employees number almost 5 million workers.


Productive labour as misfortune

In the first volume of ''Das Kapital'', Marx suggests that productive labour may be a misfortune: The idea here seems to be that being capitalistically "productive" effectively means "being exploited," or, at least, being employed to do work under the authority of someone else. Marx never finalised his concept of capitalistically productive labour, but clearly it involved ''both'' a ''technical'' relation (between work and its useful effect) ''and'' a ''social'' relation (the economic framework within which it was performed).


Ecological critique

The ecological critique focuses on mindless "production for production's sake", attacking both the neoclassical notion and the Marxist concept of "productiveness". It is argued neoclassical economics can understand the value of anything (and therefore the costs and benefits of an activity) ''only'' if it has a ''price'', real or imputed. However, physical and human resources may have a value which ''cannot'' be expressed in price terms, and to turn them into an object of trade via some legal specification of property rights may be harmful to human life on earth. Activities may have ''non-priced costs and benefits'' which never feature on the balance sheet, at most in propaganda and advertising. The Marxian view is also dismissed by ecologists, because it argues only human labour-time is the substance and source of economic value in capitalist society. Again, it is argued a very ''restricted'' idea of economic value is being operated with by Marxists. In part, this misses Marx's own point, namely that it was not him, but the growth of commercial trade which made labour-exploitation the fulcrum of wealth creation. Nevertheless, the ecological argument is that for the sake of a healthy future and a sustainable
biosphere The biosphere (from Greek βίος ''bíos'' "life" and σφαῖρα ''sphaira'' "sphere"), also known as the ecosphere (from Greek οἶκος ''oîkos'' "environment" and σφαῖρα), is the worldwide sum of all ecosystems. It can also ...
, a ''new valuation scheme'' for people and resources needs to be adopted. The core of this critique is clearly an ethical one: all the existing economic theories ''provide no healthy norms that would ensure correct stewardship for the environment'' in which all people have to live. Markets provide no moral norms of their own apart from the law of contract. To develop a better concept of "productiveness" would require a new morality, a new view of human beings and the environment in which they live, so that harmful economic activity can be outlawed, and healthy alternatives promoted. Ecologists typically distinguish between "good" and "bad" market trade and production. Some believe
capitalism Capitalism is an economic system based on the private ownership of the means of production and their operation for profit. Central characteristics of capitalism include capital accumulation, competitive markets, price system, priva ...
can "go green" (producing in an environmentally friendly way), and that capitalism is "cleaner" than Soviet-type
socialism Socialism is a left-wing Economic ideology, economic philosophy and Political movement, movement encompassing a range of economic systems characterized by the dominance of social ownership of the means of production as opposed to Private prop ...
. Others think that capitalism ''cannot'' "go green" because of the nature of the beast; so long as human accounting is done in terms of private costs and private profits, many "external effects" (externalities) will be disregarded, and at most legal restrictions and taxation can limit the environmental damage somewhat.


Material product accounts in Soviet-type societies

In the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
and later other socialist countries in
Eastern Europe Eastern Europe is a subregion of the European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. The vast majority of the region is covered by Russia, whic ...
, China and
Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...
, a system of social accounts was created based around the notion of the "material product" (
Material Product System {{Soviet-type economics } Material Product System (MPS) refers to the system of national accounts used by 16 Leninist countries for different lengths of time, including the former Soviet Union and the Eastern Bloc countries (until around 1990), Cub ...
, or MPS). This was an alternative to
GDP Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced and sold (not resold) in a specific time period by countries. Due to its complex and subjective nature this measure is ofte ...
based accounts. Behind the MPS was a modernization theory according to which the criterion of progress consisted of the physical quantity of material goods being produced. This system was, paradoxically, strongly influenced by Marx's critique of wealth creation in ''capitalist'' society, and his distinction between capitalistically productive and unproductive labour. The "material product" represented, in price terms, the net new value created annually by the production of ''tangible material goods''. Many service industries were excluded from the material product; a rigorous statistical attempt was made to separate out a productive ''sector'' and an unproductive ''sector''. Enterprise managers could be punished by law if they failed to provide accurate information. Dissident socialists objected to this approach, because they felt that in a socialist society, "productive" labour should really be defined by such things as: * whether the labour increases tangible wealth * whether it is socially useful * whether it is ecologically responsible * whether it promotes human satisfaction * whether it promotes human development * whether it promotes human health and wellbeing Since the end of communist rule in the USSR and Eastern Europe, however, the material product system has been abandoned, and new GDP-based accounts have been implemented following international standards recommended by the
International Monetary Fund The International Monetary Fund (IMF) is a major financial agency of the United Nations, and an international financial institution, headquartered in Washington, D.C., consisting of 190 countries. Its stated mission is "working to foster glo ...
, the
World Bank The World Bank is an international financial institution that provides loans and grants to the governments of low- and middle-income countries for the purpose of pursuing capital projects. The World Bank is the collective name for the Inte ...
, and the
United Nations System of National Accounts The System of National Accounts (often abbreviated as SNA; formerly the United Nations System of National Accounts or UNSNA) is an international standard system of national accounts, the first international standard being published in 1953. Handb ...
(UNSNA). The advantage of this change is that economic activity is more comprehensively valued and visible in monetary terms; a possible disadvantage is that no national accounting is done anymore of physical product units (e.g., x tons of steel produced, or y number of tractors assembled).


See also

* Division of labour *
Labour theory of value The labor theory of value (LTV) is a theory of value that argues that the economic value of a good or service is determined by the total amount of " socially necessary labor" required to produce it. The LTV is usually associated with Marxian ...
*
National accounts National accounts or national account systems (NAS) are the implementation of complete and consistent accounting techniques for measuring the economic activity of a nation. These include detailed underlying measures that rely on double-entry ...
* Surplus value *
Value added In business, total value added is calculated by tabulating the unit value added (measured by summing unit profit sale price and production cost">Price.html" ;"title="he difference between Price">sale price and production cost], unit depreciation ...


References


Sources

* Karl Marx, ''
Das Kapital ''Das Kapital'', also known as ''Capital: A Critique of Political Economy'' or sometimes simply ''Capital'' (german: Das Kapital. Kritik der politischen Ökonomie, link=no, ; 1867–1883), is a foundational theoretical text in materialist phi ...
'' * Karl Marx, ''Theories of Surplus Value''. http://www.marxists.org/archive/marx/works/1863/theories-surplus-value/ch04.htm *
An Inquiry into the Nature and Causes of the Wealth of Nations
', Adam Smith, Fifth edition (1789), Edwin Cannan's annotated edition, 1904, Methuen & Co. * M. Yanovsky, ''Anatomy of Social Accounting Systems''. * Isaac I. Rubin, ''A history of economic thought''. * Anwar Shaikh (Economist), Anwar Shaikh & Ahmet Ertugrul Tonak (1994), ''Measuring the Wealth of Nations; the Political Economy of National Accounts''. Cambridge University Press. * Seymour Melman, ''Profits without production''. * Helen Boss (1990), ''Theories of surplus and transfer: parasites and producers in economic thought''. Boston: Hyman. {{ISBN, 0-04-330372-2. * Brooks, Mick (2005)
Productive and unproductive labour
* Howell, Peter (1975)

' in ''Revolutionary Communist'' 3/4 RCG London 2nd ed 1979 * Mohun, Simon (1996) "Productive and Unproductive Labor in the Labor Theory of Value", ''Review of Radical Political Economics'', V. 28, no. 4 (December): pp. 30–54 * Savran, Sungur and Tonak, E. Ahmet (1999) "Productive and Unproductive Labor: An Attempt at Clarification and Classification", ''Capital & Class'', V. 68: pp. 113–152 Classical economics Marxian economics