As many of you know I am a childminder too. I charge 52 weeks of the year, for sickness, days off and occasional days. The only time I would not charge is if I am ill, ( not happened in 17 years) as I would not be available, else I am available all the time so a fee is due.
If you don't want your childminder to charge you when your child is not there, she is not necessarily obliged to keep that place open, How would you feel if she filled it with another child while you were on holiday? That's why we chaarge retainer fees, to keep that place for your child and only your child.
Twiglett is right, NCMA reccomend that a minimum of 4 weeks holiday is negotiated, and it is up to the childminder how she wants to charge for that. It is generally down to supply and demand and the market situation where you are. You must ask for a copy of your contract, you have also signed to say that you have recieved a copy and understand the terms of it. These contracts hold up in court and I know many people who have had to do so.
I charge £5 an hour, double before 8.00am and after 6.00pm. I have families where I look after 2 children from the same family, they are teachers and do not consider my fee high. I do only charge half fee for their holiday as they do not wish to use me at all in the holidays, and as I get some 16 weeks at half fee, I am happy with that.
The last family I looked after paid me 6 weeks holiday as that is what they got, we did try to coincide holidays and it worked well.
Payment is the thing that causes most problems, childminders really hate that part of their business, and having to justify their charges. Remember, she might charge you £200 a week as I do, but after all deductions for food, heat, light, activities, outings, treats, materials, toys, etc etc, there is less than half of that left.
If you have a problem, phone the NCMA helpline, they are happy to help parents too.