PLEASE check weights. Most are very good, and give a good idea of how much effort I need to use, but SOME packages are overweights and not marked as such. I don't blame the unloaders, it is dark in there and many weights are hard to find if on the box at all. All weights need to be easily found and any box that exceeds 60 pounds ought to have a sticker on it that says it is heavy. A small box that weighs 40 ought to have a sticker on it. I just want to know the weight. I have 3 seconds to sort a box according to the standards for sorters. That does not give me the time to check every box. I had a box going to the overgoods in MO come to me on the sort aisle today. MO is on the belt that is near the top of my head. That box easily weighed 80 pounds and almost broke my back. What was written on the box? 50#. The worst part of that is the fact that I know that box was packed by a Teamster. There is a section in the contract that says that all overweights must have stickers. If they aren't available in your area you must file a greivance for my sake. Please.