I have helped in Produce before. Mostly running Nutrition when it had its own set of aisles. Moved a few potatoes around. Unloaded 100's of produce trucks.
I have also worked a little in Frozen. Icecream pallet is the most annoying and time consuming. I have also conditioned the frozen department a few times.
It sux. My fingers were in pain after an hour. Then numb with no pain for the next hour. Then, when my fingers warmed up, they ached again.
I prefer the Dry Grocery Department. That's where the action is.
Frozen is a bit EASIER imo. Most people hate it due to the cold, but you have to stratigize when working frozen if your hours are cut. What I do is work ice-cream first ( due to the summer ), waffles. The second guy he works vegetables, potatoes & chicken. Lastly if we have time, meals & pizza aisle. Produce you have to do inventory every 30 days I believe. Frozen every 9 along with dry grocery & dairy.