Labor Day. Or in this case the day after.
Long forgotten amidst the barbecues and telethons and swimfests and political campaign kickoffs:
-- the eight-hour day (becoming long-forgotten again before our very cyber-eyes)
-- paid holidays
-- paid vacations
-- paid sick time
-- et cetera
-- you can add to the list
... all because of the blood, sweat, and tears of unions (before they were run by their own politically connected fat cats) and the workers who needed them.