JoeCo, wives are welcome to work in Dubai, and often are actively recruited. This is because they do NOT have to be sponsored by the Company they work for, as they can do it under their Husbands sponsorship. Emirates themselves are an example of this practise. Only yesterday the work internet site had a note from Recruiting notifying of their interest in Wives etc working part-time under their Husbands sponsorship.
You mention the term 'Girlfriend' in your original message. If you want to bring her with you, that better change to 'Wife' in this Muslim country. Either that, or she needs to get a job on full company sponsorship.