Question about terms used in the field

Hi I'm reading a book by a garbagemen set in Quebec (so written in French).
I'm wondering about two terms, what people actually say on the job in English speaking cities:
If you can help me out, I'd be grateful (also if you say the city you work in. Thanks!)

1. In French, they use the English word 'helper' for the guys who ride on the back of the truck and pick up the trash and throw it in the truck (as opposed to the driver).
   In your work, do you use a different name for the drivers versus the guys who don't drive?

2. Is there a special word for the back of the truck where the garbage goes - like the bed of a pickup, but in a full-sized rear-loader garbage truck.

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THANKS!