Huge mounds of salt because I'm not a parent - but I have colleagues that do that and it's never bothered me, I suppose I assume it's more a risk of interruption than it is stopping you putting the hours in at all. If someone was a strict '9-5' (or whatever) type and also had child(ren) interrupting or distracting them, then yeah, that's taking the mick a bit. But otherwise, it's not like I don't answer the door or empty the dishwasher or whatever.