It is your employer's job to pay you a living wage that keeps you working there. Do you want a raise? Have you asked for one? I would frown upon an employer pa

It is your employer's job to pay you a living wage that keeps you working there. Do you want a raise? Have you asked for one? I would frown upon an employer paying you less if you were an equal candidate, but if you are a non-native english speaker and they have to sponsor the visa then I think it is reasonable to pay you less because of the additional costs.