We have a new nanny - going ok so far, but she obviously smokes just before starting work, and on her lunch break. She very obviously smells of smoke when she comes in, and there's a fainter smell all day.
I hate the smell of smoke but more importantly I've read that third hand smoke on clothing can be harmful to young children and we have a 6 month old.
So I'm not sure what to do - as an employer can I just tell her not to smoke on her working days because of the smell and risk? Or is it none of my business what she does outside working hours?