One of my pet peeves is working in a new kitchen where there is poor communication, I can't stand continually asking for something to do after I finish a task. It's important not to be afraid to ask questions especially when doing something that you are not used to, however it's even more important to jump in and initiate tasks yourself.
Chefs and cooks are obsessive, sometimes sadistic and most of all control freaks, we don't like to ask or be asked the same questions multiple times. I like to border on annoyance when communicating, I'm from the school of "there can never be too much" when it comes to the C word. Whether I'm expediting, on the line, executing a catering event or prepping I make sure to over-communicate so that things run smoothly and nothing falls through the cracks.