Lisalisa, if the subject of sick pay wasn't discussed with your nanny at the interview or during employment, then you just need to pay her SSP. It's about £12 - £15 per day and you claim this back from the IR when you pay the Tax and NI every quarter. Perfectly legal and fair. However, if again you didn't agree on the subject of sick pay and you pay her full pay this time, you then set a precedent and she can contest this should you then revert to SSP. I am not legally trained but was advised this.
Re: the nanny who you paid x2 weeks holiday pay. Was this accrued holiday? I only pay accrued holiday as you never know if they will return and also why give somebody a sub unless they have worked for you for years and you want to do them a favour? Bad luck though.
Going back to your current nanny, sounds suspicious to me. I wouldn't offer to pay her flight, I would just look for another nanny.
I have had a nanny call me from the hospital with gastric flu and took nine days off. I was spitting. She came back a stone lighter and I did call the hospital on the pretext of sending flowers and they did confirm she was a patient. Paying her £400 NET per week for her NOT to turn up to work and stopping me from working really p**d me off (apologies for the expletives) but I had a doctor's note as well and saw that it was genuine. She then called in sick two more times (unpaid) on odd days and I sacked her saying "I'm going to look after my children myself."
A good one to add to the employment contract is that sick pay will not be paid in the first six months of employment except for SSP and is discretionary thereafter. I have that in all my office contracts. It makes people think twice about lolling in bed on a Monday morning...
Oooooh, the difficulties of it all.