Make sure you dot your i(s) and cross your t(s), do all your paperwork right and complete. e-mail in the stuff they want e-mailed. Do correctly anything that is under your control and you should be okay. At our house, a lot of stuff is out of our control, which is largely due to poor management. Yet when things go bad, they try to nail the driver for it, but almost all of it can be traced back to them. There may be a few drivers who aren't working as hard as they could. But hey, I show up every day, they give me a route every day, I must be doing something right.
I've never seen so much animosity between the management and the workers before I came here. If they call you in, keep your cool obviously (they may be trying to provoke you). If it's disciplinary, don't settle for another driver being present, insist that the shop steward be present, it's your right. Make notes during the day if you are falling behind, they might ask you why later, and you might not remember every 5 or 10 minute thing that happened, but they add up, waiting for an open dock, waiting for the customer to check in the order, waiting for them to write a check. I would have notes, and would account for 85-90% of the time lost, his fault, and the supervisor would still be shaking his head saying "I just don't see it, how could you be so far behind?". And he's just trying to cover his butt, because it probably just got reamed by a customer or a sales rep. I hear that some Sysco houses are run right, so you might get lucky and not have any problems.
I just got "coached" today for having only a 2.7 second following distance during rush hour traffic! But the file was several weeks old, so I didn't have to refuse to sign it.
Don't pick up a box with one hand, and get your fingers under the case before you lift it. Picking up a box with a one handed pinch grip or by pressing on the sides with both hands will cause repetitive stress injuries around the elbows, and it may take several years before you start feeling the pain. I had some stomach troubles a while back and I was retaining water, and for a while I just couldn't bend over anymore, so I started squatting down to get the cases, and oh my gosh, my back feels so much better now.
Some drivers are so gung ho union, that they refuse to jump the truck from the reefer, because that's the mechanic's work, plus they get paid per minute while they wait for the mechanic. One of the drivers had an uncle who was severely burned when the battery blew up while attempting a jump start, so that's why he doesn't do it. I e-mail it in, charge delay time while I'm jumping it. I want to get done and go home. I came across one reefer that I couldn't see the battery's polarity markings, so I called the shop and they tried to tell me which one is which, and I said to hell with it, I'll just hook up the cables and see which end sparks when I touch them to the frame.