There is minimum salary by contract- 700 QR..
But you must give her a nice room to live in and bathroom, kitchen she can use, food and any medical help ( if she needs), hala card and mobile ( if she doesn't have) and money monthly (or how you want) for mobile credit,she must keep in touch with her family. And of course to provide with such things like soap, shampoo etc
But 700 QR is really nothing for that hard job what they are doing.. so, increase it..