Back in the day the young supervisors at UPS all wore ties...including tie-ties. When you made the jump from hourly to super, you "took the tie" (though later it became "going over to the Dark Side" as the Teamsters upped their slander game).
Given that the place contains miles of exposed conveyor belts which were regularly trod upon, finagled-with and wrestled...gawd, it makes me cringe to think of the unhappy possibilities...
My Dad worked at the USPS, it was the Post Office back then. He always wore clip on ties. When I was a snotty 11 year old, I made a comment about them.
That is when I learned you did not wear ties around miles of conveyor belts.
He did not make me feel like an idiot. That was nice of him.