I've found in my diner it can go one of two ways.
You can't resist all the goodies that are right in front of you, and you gain weight by eating french fries and chicken fingers and rice pudding. It's so much easier and cheaper to grab a cheesesteak at work then wait till you get home and cook something healthier.
Or, you don't eat at work and all the running around takes a few pounds off.
Working in the restaurant hurt me so much a few years back, when I was going through some personal issues and cheered myself up by emotional over-eating.
It took me almost two years, but I've recently gotten to my goal weight through sheer willpower at work (and obviously the exercise). I'm afraid that I'm going to be complacent now that I am happy with my weight, and be a little lax about what I put in my body (food-wise, you perverts).
How has working in a restaurant affected your weight and eating habits? Did you put on any poundage, or lose any? How do you avoid binges?