Pay Outside Scheduled Hours?

So I've been a contract for a nanny position. I will be paid 18$ an hour and working 32 hours a week (in Vancouver, Canada). One part of the contract says: "Babysitting rate outside the weekly schedule (if agreeable) will be ??/hour." They left it blank for me to suggest a number. Should I charge more than regular rate? If so what is a reasonable amount?
Yuqing84 Yuqing84
26-30
1 Response Sep 17, 2012

I'm not sure, but this one family that's considering hiring me would be paying me $26.66 hourly. so...$22 I guess?