It's hard to answer your question with a Yes or No. It really depends on how deep your bedding is, how many chickens you have, how much space, and even what type of chickens.
Perhaps others can clarify a bit, but my rule of thumb is just to add more bedding when it gets stinky, or when the bedding isn't getting scratched through on top (crusty). Actually, if it's crusty, I'd say the bedding should have had more added awhile ago.
Other than that, you really don't need to change the bedding unless/until it gets too deep to be manageable. If the bottom is composting down into your soil, you're really just creating more dirt. Theoretically, it could be possible to never change the bedding in a floorless coop, if everything is composting down nicely at the bottom, but I think that would be quite a trick.