What about the 12 keys to lifting and lowering?
We got that covered for mornings.
Get close.
Position feet.
Call your coworker over.
Call another neighbor over.
Tell them to bend at the knees.
Coordinate their lift.
Watch as they grab the package in the middle by the straps.
Test for weight and shifting contents by shaking boxes full of fragile things.
Tell them where to put the package.
Make sure they lift with a smooth, steady motion.
Watch them twist instead of stepping or pivoting.
Throwing packages onto the floor counts as using existing equipment.