Probably a double-edged sword.
Work experience would cause you to run into situations that would make parts of the material easier to understand. Definitely a lot of people ask 'why does the spec require this?' questions that they probably wouldn't ask if they'd already encountered a relevant real-life EJB problem.
On the other hand, if you have work experience in EJB, you are probably also employed and don't have as much time to study as you'd like.
So, the secret of exam success is probably to have the experience, but be currently unemployed. Alas, I'm not willing to give up my job, so I'll just have to hope for the best.

[ February 19, 2004: Message edited by: Reid M. Pinchback ]