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Longman Dictionary of Contemporary English
labour movement
noun
EXAMPLES FROM CORPUS
▪ From then on, the labour movement offered no serious opposition to conscription as such.
▪ Industrial militancy naturally declined, and the problem of the unemployed almost completely preoccupied the labour movement until 1934.
▪ Outraged by this action, the miners, supported by the Colorado labour movement, took up arms and raided local mines.
▪ Parts of the labour movement, however, remained or became hostile to the war.
▪ Some voices within the labour movement stressed a blend of self-improvement, pleasure and health.
▪ The policies and attitudes of the autocracy virtually ruled out the emergence of a moderate, reformist labour movement.
▪ There was a tendency to radicalism in the labour movement.
▪ These divisions within the labour movement made it a less influential force on the side of social reform than is often thought.
Wikipedia
Labour movement

The Labour movement or Labor movement (see spelling differences), or, respectively, labourism or laborism, are general terms for the collective organization of working people developed to represent and campaign for better working conditions and treatment from their employers and, by the implementation of labour and employment laws, their governments. The standard unit of organization is the trade union.

In some countries, especially the United Kingdom and Australia, the labour movement is understood to include a formal political wing, usually as a political party known as a " labour party" or " workers' party". Many individuals and political groups otherwise considered to represent ruling classes may be part of and active in the labour movement.

Contemporary labourism developed in response to the depredations of industrial capitalism at about the same time as socialism. However, while the goal of labourism was to protect and strengthen the interests of labour within capitalism, the goal of socialism was to replace the capitalist system entirely.