Telling me I should bust my ass a little earlier so he doesn't have to come in and load his own is stupid especially since he has been doing it for at least 10 years and is definitely not a cover.
It's Management's fault I didn't get any help until last rev and literally all my help did was dump the cages into a big mixed pile then management immediately took him to help elsewhere. No where in this scenario is it my fault. I do the job correctly at 150 pph safely, taping up all my packages, and organizing bulk stops.
If he wants to take his anger out on me he will get what he deserves.