White Collar vs. Blue Collar - Meaning & Difference
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Colourful idioms
American English at State - What's the difference between blue-collar work and white-collar work? Find out with this #AmericanEnglish graphic. Do you prefer blue-collar work, white-collar work, or a combination of both?
Blue-Collar Worker Definition & Explanation | Sociology Plus
Blue-Collar Definition | Team Engine
Blue-Collar Definition | Team Engine
America Employed: Survey of White, Grey, and Blue Collar Workers | Refresh Leadership