is it possible to bring a loved one to the UK on a work visa just for a year or so? Something like just working as a nanny or housekeeper.

My lady is currently looking for work coz school is finishing now and she has looked into the prospect of working overseas to earn a decent wage to help support her family. But even earning minimum wage her in the UK would be great for her and her family. How hard is it to get a job here in the UK and get a quick visa arranged? If this question has been answered b4 then jsut direct me to the topic, thanks.