This day is celebrated to honor all the men and women who participated in the strike at general motors in 1937. The strike ended on this day in 1937. There are simple rules for this day: Everyone should wear a white shirt or blouse, everyone must follow safety and work rules, Your white shirt must not get dirtier than your boss's shirt. This day changed into white T-Shirt Day for some people. Wear White Wristbands so that you can remember them.