Just like any other work place, you have hard workers and workers hardly working. There would probably be less turnover if workers were paid what they are worth. Yes smiles and verbal appreciation helps but that doesn't pay the bills, mortgage, and food. It is hard to get work done when you are always training people due to high turn over and called in meetings. It is hard to be trained properly when you sit with 3 to 4 people for 2 to 4 hours at a time and you hear how you should do things several different ways. You learn the lazy way, the quick way, how to pass the buck way, and the correct way. Sometimes all in the same day.
The pay. A proven track record at Airgas means nothing when it comes to raises.