The proletariat (/ˌproʊlɪˈtɛəriət/; from Latin proletarius 'producing offspring') is the social class of wage-earners, those members of a society whose possession of significant economic value is their labour power (their capacity to work).
The name presumably originated with the census, which Roman authorities conducted every five years to produce a register of citizens and their property, which determined their military duties and voting privileges.
Officially, propertyless citizens were called capite censi because they were "persons registered not as to their property...but simply as to their existence as living individuals, primarily as heads (caput) of a family.
"[5][note 1] Although explicitly included by name in the Comitia Centuriata (Centuriate Assembly), proletarii were the lowest class, largely deprived of voting rights.
Late Roman historians such as Livy vaguely described the Comitia Centuriata as a popular assembly of early Rome composed of centuriae, voting units representing classes of citizens according to wealth.
"[9] In the early 19th century, many Western European liberal scholars—who dealt with social sciences and economics—pointed out the socio-economic similarities of the modern rapidly growing industrial worker class and the classic proletarians.
[10] Swiss liberal economist and historian Jean Charles Léonard de Sismondi was the first to apply the proletariat term to the working class created under capitalism, and whose writings were frequently cited by Karl Marx.
In the socially superior, less progressive direction are the lower petty bourgeoisie, such as small shopkeepers, who rely primarily on self-employment at an income comparable to an ordinary wage.
In another direction, the lumpenproletariat or "rag-proletariat", which Marx considers a retrograde class, live in the informal economy outside of legal employment: the poorest outcasts of society such as beggars, tricksters, entertainers, buskers, criminals and prostitutes.
According to Marxism, capitalism is based on the exploitation of the proletariat by the bourgeoisie: the workers, who own no means of production, must use the property of others to produce goods and services and to earn their living.
On the other hand, capitalists earn their wealth not as a function of their personal labor, which may even be null, but by the juridical relation of their property to the means of production (e.g. owning a factory or farmland).
Over time, this developed into the levels of social class where the owners of resources joined to squeeze productivity out of the individuals who depended on their labor power.
[24]: 363 This conception of the proletariat allowed for a Marxist theoretical framing under which the revolution could address the relative weakness of industrial working classes in China.