Cannot comment for all stores, but the store I worked in had very low morale.
Stores are separated into departments, with little overlap, and everyone is out for themselves. There's little camaraderie between departments, or any incentive to help out.
Theft is the most difficult part of the job, with repeat offenders wasting staff time and resources, as well as major break ins every two months or so. This makes it hard to maintain stock integrity.
Staff training seminars for potential leaders is ok, but lacks any follow up in a practical setting.
Great place to hone skills