For drivers: Stay hydrated. Get organized. Always keep your next few stops set up and ready to go on the shelf. Set up the bulk stops at the back on the floor so you can push them right out onto your cart at the stop. Keep your air deliveries, ground deliveries, air pickups, and ground pickups segregated. if you can, concentrate on businesses earlier in the day until you become accustomed to your route. You can always come back for residentials. Get a good flashlight or spotlight for finding house numbers in the dark and so you can see where you're walking. Take note of where you should be along the route at certain times of day to keep things running smooth. When in doubt, call for an air recovery, it's not worth getting back to the building with your air pickups late. Don't deliver late air, don't have missed pieces, don't have accidents or injuries, and follow the methods. As long as you do those four there's not much they can do to you.
For belt workers: Stay hydrated. You will be sore for the first couple weeks but your muscles will get used to it. Work as quick as you can but don't overexert yourself. You have nothing to prove; get help lifting heavier stuff. Make a game out of it: have races, tell jokes, or play jenga; it makes the time go much faster and more enjoyable.
.
