Check your contract to see if it specifies 10 or 14 vacation days.

Ours says 10. Other agencies specify 14 because of abuse by host families (au pair takes 5 week days off Monday-Friday, then host families stuff 20 hours of work on the weekend = au pair works 20 of 45 hours in a week but still spent 5 days of vacation time).

So if yours is a 14 day agency, then you can count the .5 weekend day that you would normally schedule as a vacation day.

Our schedule varies so we make her weekly schedule on Sundays each week, Monday-Sunday. So, when we give a week off its Monday-Sunday or some 7 day stretch of her choosing.

Oh and first entitled princess au pair wanted to leave on a Friday mid-day for her 9 days off which we agreed to to be nice but then she basically got really pissed when she had to work a couple of extra hours when my car broke down one evening a few weeks later and I had to wait to be towed. The audacity. But most of our APs wouldn't have behaved that way!