I often used to write "poor management" as my reason for leaving my last job, then one prospective employer began asking questions about that while saying he wanted to know whether that was the actual problem or I was simply a malcontent....and I am *not* saying or suggesting that is your case. Some managers seem so busy trying to satisfy their own bosses that they do not realize what is actually going on out on the floor, and I think it best to try to help the manager get his or her own job done rather than asking for something such as additional staff where that is likely not his or her decision anyway.