Hi there Elaiza and welcome to NeuroTalk.

I've never heard of a specific job that could lead to a Cerebro Spinal Fluid leak, but there are lots of causes for them to happen. It's even possible to have one occur spontaneously. http://www.medscape.com/viewarticle/405624

You don't mention why you want to know and I was wondering if you think this might be happening with you.

Try typing CSF leak into your web browser, and see what you come up with.