I think this also ties well into the people running barns that don't want to do the work themselves. When you are talking 100 or 200 horses, obviously that is not a one person job, but at home the breeding farm with 150-200 head of horses works and runs perfectly smooth with 8 people working, and the 2 best bosses ever :). Whatever that saying is, "too many cooks spoil the whatever" goes the same way for farms...too many workers leads to things that get missed ("I thought you did this" "I thought you told that person to do that" "so and so was supposed to do that") and accidents and mistakes. There is too much gray area, someone always is depending on the other person to get something they don't want to do, done. And to manage so many people is also next to impossible. There is no way to keep track of who is where and who is supposed to be doing what on top of staying aware of the things that need to get done, horses that need work, etc. Again, not that it can't be done, but it takes a high level of organization and probably a pair of brass balls to ensure that your workers are doing a good job (and you have the fear of god ingrained in them when it comes down to what you have to say!!!)
Anyway, moral of the story is #1 communication is key to running a successful barn and #2 proper horsemanship = safety
As always, leave your input and lets have a discussion!