Old thread, but I do have some advice:
Get into the habit of looking for the LABEL instead of the package. You will get your hands on the box soon enough, but if you stand there fumbling for a look at the label after you have picked up your package, you will be VERY tired after 3-4 hours. Try to spot the address, and move the package 1 time, with 1 movement. If it doesn't look good where you put it, LEAVE it there and try to do better with the rest. You don't have time to move a package more than ONCE.
The new loader ususally goes tries to fill the trailer( used to be called a feeder ) by stacking packages on top of one another, resulting on columns. Generally speaking, this is what a new loader needs to do, except laterally, not vertically. A new loader will recognize that he is building columns just like he wants to, except they are sideways. This will help to create the shelves and weight distribution that UPS wants if a loader builds walls laterally. When building you shelves, just set them up there, and tighten the shelf by wedging packages on the ends of the shelf, that way the shelf is tigh by wedging only 1 package.
Whenever entering or leaving the feeder, check a minimum of 2 bags - 2 leaving and 2 getting back in.
Check numerous packages in the bag. Small sorters have to know many zips and zip splits, so their chances of misloading into a bag is high.
If you don't have perfect vision, go get your eyes check and your new prescription filled. My experience has been that, not surprisingly, most of the best loaders had exceptional eyesight.
If the pickoff man or sorter sends a missort into your load, let him know. You will have less misloads if you have less possibilities coming into your load.
Concentrate on efficiency. Less moves means more speed and less fatigue. Try to maintain a rythm.
If it gets real slow, check for a jam on the belt. If nothing is coming down your load chute, it's not because you're lucky. 99% of the time, there is a jam building up.
Don't try to put a very heavy package up high just because it's the right size. It will crush other boxes before it gets to it's destination. Start a new wall with it instead.
If anybody tells you that they never had any UPS nightmares after they started, they're lying. It gets easier.
If a belt motor catches on fire, let it burn. Not much to burn inside an electric motor and the maintanence guys HATE that white powder.
Last but not least, develope a READING HABIT. You won't be there long if you load the wrong packages.