The Working Class
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The working class earns from labor that is typically hourly, more closely supervised, and less protected against interruption than salaried work.
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A clinic visit requires missing a shift, and missing a shift costs the day's pay.
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The distinction is control over one's work and its security, not the difficulty of the work.