Working in the fast food industry whilst your dieting is the hardest thing ever! I mean I'm surrounded by delicious yet extremely high calorie food that I can gauge on all day 5 days a week (FREE) if I really wanted too. Plus the employee discounts make the meals £2.29 which doesn't stop me from swiping my card. Preparing for my breaks in advance is definitely key otherwise I'll just eat food at work, which is not good for the waist line! The perks of my job though are that I'm on my feet all day running around so even if I do eat fast food (within moderation) I don't put loads of weight on.
An ex colleague of mine left her job with us and went to work as a receptionist at a doctors surgery, and she put on masses of weight as she just sat there all day eating cakes that other receptionists, doctors or customers bought in.
So I suppose that my job keeps me active enough to eat fast food within moderation and still maintain my weight, which is a bonus! I still monitor what I eat however, I tend to go for chicken over beef and switch the fries for fruit. Not the healthiest option but definitely a yummy one!