I have a small potted bonsai tree at home. It is not doing well no matter what window I put it in. I'd like to bring it to work and keep it in my office, but there is no natural sunlight there, just flourescent lights. Someone else has houseplants in their office, and they do well in the flourescents, but I'm not sure if it's the same way for a bonsai.

It depends on the bonsai tree. You could always supplement your lighting with a grow light. What species of bonsai do you have?