Rifa than you need to specify that in your post, as it wasn't evident that you were wearing a specially designed abaya. Also, I cannot imagine many hospitals would hire a woman who wears niqab, as it would be disconcerting to the patients. Patients need to feel comfortable with their doctors or nurses, not being able to see their faces would make most people feel very uncomfortable.

Like it or not, how you dress or how you're willing to dress, does effect what jobs you can get. In the UAE women who wear niqab are not allowed to work for government, because it is thought to interfere with communication. Female students are not permitted to wear niqab in government universities either.

Anywhere in the world a woman in abaya would not be able to be a fire fighter or police officer for example. Neither would any woman who insists on wearing dresses or loose garments (even ones that allow you to role up your sleeves).

This is the way of the world.