I know I'm gonna catch alot of crap for this but, I don't think it should be the dockworkers job to make sure the trailer is either placarded or even placarded right, it should be the driver.
When your out on the road, and something happens, it's your a$$ out on the line, not someone else's.
I can see it now, Jon Q. Driver gets pulled over or in an accident, and the trailer is placarded wrong, gets a ticket and ultimatley gets written up.
His response? "Well the dockworker placarded it, not me, why should I get in trouble?" Manager: "But it's your responsibility to make sure it's done right". Driver: "But if the dock worker did it right the first time, this would've never been a problem."
I do think however, the dockworker or dispatch should fill out that orange card letting us know that there is hazmat on the trailer, cuz sometimes you get busy and not look at all your bills to see whats on there.
One time, I had hazmat on and I didn't know it till I got to my first or second stop, good thing it wasn't very much and didn't need to be placarded.
Now I check all my bills.....