Costco Wholesale as a business treats its employees fairly, and pays very well comparable to other businesses of similarity. In the first years there are chances to advance and become promoted. I believe where it really shined as an employer was the benefits they provided; healthcare, 401K and even dental. Advancement did become a problem when workers were maxed out (reached highest pay level) where promotional opportunities start to become a little elusive. I would risk to say that an issue I and many coworkers felt and feared w/Costco was a lack of protection and communication. It is extremely customer based, which is a wonderful tool in developing stronger skills with the public, but depending on management any complaint from anyone about anything, whether serious or quite trivial, seemed met w/lack of belief in its own employees. Now this is a serious, prestigious customer service warehouse known for its expertise, conflicts like customer relations going wrong happen and Costco does go through lengths to teach by example how to avoid issues and how to solve them. But also w/in a customer service based employment, there should be a certain amount of protection or belief towards its own employees that go to great lengths for them, and as stated depending on management this seemed lacking. Other than that being said, Costco Wholesale is definitely an employer that will teach several useful skills in the business world, it expects only the best from its employees as it should, and offers several various departments in which to learn assets.