A casebook by Seth Godin
Seth's tribes casebook: http://sethgodin.typepad.com/seths_blog/files/CurrentTribesCasebook.pdf
Seth argument makes sense for all these three: who you work for, who you work with and who works for you. It’s more about the work environment.
I have worked in great work environments as well as not so great ones...and I believe it is the single most important factor affecting your productivity and growth.
Seth's tribes casebook: http://sethgodin.typepad.com/seths_blog/files/CurrentTribesCasebook.pdf