What can I do about a coworker who gave a reference when he was not authorized to do so?

Question

I was given a job offer, pending 2 reference checks. They called my current job and asked for the manager (whose name I had listed but who was not there). A coworker (who is not management) who answered the call volunteered to give the reference, and even identified himself as qualified to do so. This person freely discussed me, and subsequently, the job offer fell through. The second reference was not even called.

I am quite upset and would like to know what recourse I have against this coworker or the company itself.

Answer 1

Tell the boss.