What we are allowed to do is very different from what we actually end up doing. We also have the backing of a good union(s), Chief Pilots that you can actually talk to and generally reasonable rosters that can be flown. Personally, I don't think we have too much to worry about when you compare our position with others. And then we have the calling in "unfit for duty" which you MUST do if you are. We have many subjects which need discussion with the company but (IMO) having to fly when you are too knackered is not one of them.
PM.