After thinking it over some more and reading the other posts, I think you probably shouldn't do it as well. I think I'm in a different situation where I've been with this family so long that it's a little more appealing. They have tons of toys at their house already, I can take the kids where I want (grocery shopping, etc), I am switching to part time... Things like that. If it's a new client, then I do think 9 hours a day will kill you! Especially if your child is away from all of her things. Could you maybe work Tuesdays and Thursdays and they could hire someone else for Monday, Wednesday, Friday? Then if you or the other care giver gets sick, you could cover each other?