Is 2 hours on an exersise bike burning 1100cals/day dangerous and counterproductive for losing fat?

I would make sure to eat TONS of protein. I exercise a lot because I love to, and because I can eat what I want. I still eat healthy. Think of those people who do constant movement for work 8 hours a day, like bike messangers, or UPS guys. I'm sure they burn tons of calories. Be careful though. If you be sure to consume enough then you can afford to burn that much.