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Three construction workers in uniform sitting on concrete at construction site, examining building plans
labor day hands with fists raised tools
Pregnant woman suffering stomach ache and her husband ringing a hospital
LABOR DAY. Hand tools lying on the table. View from above, close-up. Preparing for the celebration. Congratulations to loved ones, family, relatives, friends and colleagues. National holiday concept
Construction worker with trowel and mortar builds a wall / contour vector drawing
Child laborers portrayed by Lewis Hine in 1911. Dust covered Breaker boys at Pennsylvania Coal mine, used hammers to "clean" the coal, separating slate rock from the mined coal.

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