Workers' control in the context of "Guild socialism"

Anarcho-syndicalism is an anarchist organisational model that centres trade unions as a vehicle for class conflict. Drawing from the theory of libertarian socialism and the practice of syndicalism, anarcho-syndicalism sees trade unions as both a means to achieve immediate improvements to working conditions and to build towards a social revolution in the form of a general strike, with the ultimate aim of abolishing the state and capitalism. Anarcho-syndicalists consider trade unions to be the prefiguration of a post-capitalist society and seek to use them in order to establish workers' control of production and distribution. An anti-political ideology, anarcho-syndicalism rejects political parties and participation in parliamentary politics, considering them to be a corrupting influence on the labour movement. In order to achieve their material and economic goals, anarcho-syndicalists instead practice direct action in the form of strike actions, boycotts and sabotage. Anarcho-syndicalists also attempt to build solidarity among the working class, in order to unite workers against the exploitation of labour and build workers' self-management.

The foundations of anarcho-syndicalism were laid by the anti-authoritarian faction of the International Workingmen's Association (IWMA) and developed by the French General Confederation of Labour (CGT). Anarcho-syndicalism was constituted as a specific tendency following the International Anarchist Congress of Amsterdam in 1907, which led to anarcho-syndicalism becoming the dominant form of trade union organisation in Europe and Latin America. After facing suppression during the Revolutions of 1917–1923, anarcho-syndicalists established the International Workers' Association (IWA) in 1922. Anarcho-syndicalism reached its apex during the Spanish Revolution of 1936, when the National Confederation of Labour (CNT) established an anarcho-syndicalist economy throughout much of the Spanish Republic. Anarcho-syndicalism went into decline after the defeat of the anarchists in the Spanish Civil War in 1939. The movement split into two factions: the "orthodox" faction, which held to traditional syndicalist principles in spite of changing material conditions; and the "revisionist" faction, which aimed to achieve a mass base and work within the framework of newly established welfare states. By the end of the 20th century, the rise of neoliberalism and the collapse of the Eastern Bloc had led to a revival in anarcho-syndicalism, with syndicalist unions once again being established throughout the globe.

Trotskyism (Russian: Троцкизм, Trotskizm) is the political ideology and branch of Marxism and Leninism developed by Russian revolutionary and intellectual Leon Trotsky along with some other members of the Left Opposition and the Fourth International. Trotsky described himself as an orthodox Marxist, a revolutionary Marxist, and a Bolshevik–Leninist as well as a follower of Karl Marx, Friedrich Engels, Vladimir Lenin, Karl Liebknecht, and Rosa Luxemburg. His relations with Lenin have been a source of intense historical debate. However, on balance, scholarly opinion among a range of prominent historians and political scientists such as E. H. Carr, Isaac Deutscher, Moshe Lewin, Ronald Suny, Richard B. Day and W. Bruce Lincoln was that Lenin's desired "heir" would have been a collective responsibility in which Trotsky was placed in "an important role and within which Stalin would be dramatically demoted (if not removed)".

Trotsky advocated for a decentralized form of economic planning, workers' control of production, elected representation of Soviet socialist parties, mass soviet democratization,the tactic of a united front against far-right parties,cultural autonomy for artistic movements, voluntary collectivisation, a transitional program, and socialist internationalism. He supported founding a vanguard party of the proletariat, and a dictatorship of the proletariat (as opposed to the "dictatorship of the bourgeoisie", which Marxists argue is a major component of capitalism) based on working-class self-emancipation and council democracy. Trotsky also adhered to scientific socialism and viewed this as a conscious expression of historical processes. Trotskyists are critical of Stalinism as they oppose Stalin's theory of socialism in one country in favour of Trotsky's theory of permanent revolution. Trotskyists criticize the bureaucracy and anti-democratic current developed in the Soviet Union under Stalin.

Mutualism is an anarchist school of thought and economic theory that advocates for workers' control of the means of production, a free market made up of individual artisans, sole proprietorships and workers' cooperatives, and occupation and use property rights. As proponents of the labour theory of value and labour theory of property, mutualists oppose all forms of economic rent, profit and non-nominal interest, which they see as relying on the exploitation of labour. Mutualists seek to construct an economy without capital accumulation or concentration of land ownership. They also encourage the establishment of workers' self-management, which they propose could be supported through the issuance of mutual credit by mutual banks, with the aim of creating a federal society.

Mutualism has its roots in the utopian socialism of Robert Owen and Charles Fourier. It first developed a practical expression in Josiah Warren's community experiments in the United States, which he established according to the principles of equitable commerce based on a system of labor notes. Mutualism was first formulated into a comprehensive economic theory by the French anarchist Pierre-Joseph Proudhon, who proposed the abolition of unequal exchange and the establishment of a new economic system based on reciprocity. In order to establish such a system, he proposed the creation of a "People's Bank" that could issue mutual credit to workers and eventually replace the state; although his own attempts to establish such a system were foiled by the 1851 French coup d'état.

Revolutionary Catalonia (21 July 1936 – 8 May 1937) was the period in which the autonomous region of Catalonia in northeast Spain was controlled or largely influenced by various anarchist, syndicalist, communist, and socialist trade unions, parties, and militias of the Spanish Civil War era. Although the constitutional Catalan institution of self-government, the Generalitat of Catalonia (led by the Republican Left of Catalonia, ERC), remained in power and even took control of most of the competences of the Spanish central government in its territory, the trade unions were de facto in command of most of the economy and military forces, which includes the Confederación Nacional del Trabajo (CNT, National Confederation of Labor) which was the dominant labor union at the time and the closely associated Federación Anarquista Ibérica (FAI, Iberian Anarchist Federation). The Unión General de Trabajadores (UGT, General Worker's Union), the POUM (Workers' Party of Marxist Unification) and the Unified Socialist Party of Catalonia (PSUC, which included the former Communist Party of Catalonia) were also prominent.

Socialist rule of the region began with the Spanish Revolution of 1936, resulting in workers' control of businesses and factories, collective farming in most of the countryside, and attacks against Spanish nationalists and the Catholic clergy. The growing influence of the Communist Party of Spain (PCE) in the Popular Front government and their desire to nationalize revolutionary committees and militias brought it into conflict with the CNT and POUM, resulting in the May Days and the eventual replacement of the CNT by the PSUC as a major political force in Catalonia until their defeat to the Nationalist forces in 1939.

The Italian Syndicalist Union (Italian: Unione Sindacale Italiana; USI) is an Italian anarcho-syndicalist trade union. Established in 1912 by a confederation of "houses of labour", the USI led a series of general strikes throughout its early years, culminating with the Red Week insurrection against the Italian entry into World War I. During the Biennio Rosso, the USI was at the forefront of the occupation of factories, which saw hundreds of workplaces throughout the country brought under the control of workers' councils. The USI also led the establishment of the International Workers' Association (IWA), which became the main international organisation of anarcho-syndicalist trade unions.

After the rise of Italian fascism, the USI was banned and its members were either arrested, driven underground or forced into exile. By the late-20th century, the USI was eventually reconstituted and once again involved itself in radical strike actions. Expelled from the IWA in 2016, together with the Spanish CNT and German FAU, it established the International Confederation of Labour (ICL), a new international of anarcho-syndicalist trade unions.