Speaking as a former nanny in central London and abroad, the issue of sick pay is very interesting.
But as I've stated on previous posts, the person taking care of your most cherished possesions (if that makes sense!)is very very important to you and should be treated as such.She has got your kids all day, and would YOU go the extra mile for an employer who treated you fairly or one who tried to cut corners and thought you were just a commodity to treat depending on your mood at the time?
If you think getting cheap, foreign childcare and treating her like a slave is the answer,don't be surprised when your kids are the ones who suffer, as they have a person looking after them who is disillusioned and unhappy....