working class
US /ˈwɜːrkɪŋ klæs/
UK /ˈwɜːrkɪŋ klæs/

1.
the social group consisting of people who are employed for wages, especially in manual or industrial occupations
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Many people from the working class struggled during the economic downturn.
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The factory provided jobs for the local working class.
1.
relating to or characteristic of the working class
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He grew up in a working-class neighborhood.
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The film depicts the struggles of a working-class family.