Seriously?
In the words of my previous Manager: "I expect that the people that work for me are the type that WOULD eat their lunch at their desk" (Yes, them's quotation marks!).
In my current job we are expected to be working all day. You may grab a sandwich if you happen to be working where there are shops. But if you are not actually ON a job, then you will be given more jobs. There IS no lunch break.