Que haces is Spanish for "What are you doing?" or "What do you do?"
what) needs an accent to distinguish it from another
que (which is often translated as
¿Qué (has an accent) trabajo haces? Means
What work do you do? or "What do you work with?"
El trabajo que (no accent) haces. Means The work
that you do.
The first "Qué" is mostly for questions.
If you don´t have a question mark the meaning could be different:
Quiero aprender a hacer lo que haces.
I want to learn to do what you do/make.
Context is important
In Argentina "qué hacés" also means
how are you. To ask "what are you doing?" we should say "qué estás haciendo?" not "qué hacés".