My forklift driver at the main plant often has just awful jokes. They're known as Hartley specials around the plant. Apparently he looks them up on jokes.com. Since my coworker sawed his fingers off with a table saw, I guess Hartley went home and looked up "workplace injury jokes". Here's one:
Morty the dumb chap is working at a lumberyard. He brings the saw back, he chops some wood, brings the saw back, chops some wood, brings the saw back, brings it a little too far and cuts off his ear. So he's diggin around in the sawdust trying to find it, and his supervisor comes up. "Hell you doing, Morty?" And he says, "Well you know, I cut off my ear boss, and now I'm trying to find it." So his boss looks down and picks up an ear and goes, "This it?" And Morty says, "Naw, I had a pencil behind mine."
The best part is when Hartley is like, "Did you get it?! Because people sometimes used to hold pencils behind their ear? Eh? Eh?" You can't help but laugh.
Bonus: What's green, fuzzy, and if it fell out of a tree would kill you?
A pool table.