7. WHY ARE MANUAL WORKERS CALLED ‘BLUE-COLLAR’?
The term was coined in the late 19th Century when most US manual workers wore shirts with blue, indigo-dyed collars, which could hold more dirt than white ones, without being noticed.
The term was coined in the late 19th Century when most US manual workers wore shirts with blue, indigo-dyed collars, which could hold more dirt than white ones, without being noticed.