I suppose my position is a little different since I work in academia. I work hard, I work well, I work above and beyond the call of duty, but that has much more to do with loving what I do than to any "loyalty" to the institute. My main loyalty is to science.
I suppose you could say that I'm loyal to the people in my collaboration, in that I would never divulge results that are shared confidentially, or take the credit for someone else's work.
But I go where my work takes me: if another institute would offer me a better remunerated or more interesting job, I'm would go in a heartbeat. In the grand scheme of things in my life, the place where I work is rather irrelevant.