In my job I keep good records. They come in very handy; last year, about six months after I'd started working for a new account, I got a call from my boss. Apparently the former account was looking for one particular dictation, and the records showed that I had transcribed it. My records showed that I had been unable to transcribe the dictation because it had been inaudible, and that I had notified the client of this. My boss was thrilled; she said, "Thank goodness you keep good records!"
Years ago a PA who came into my cubicle years ago and asked for a reprint of a dictation he had done. He couldn't remember the name of the patient, or the date or type of dictation - he just knew he had done it. Fortunately he hadn't dictated many, so it wasn't that hard to track down, and I accused him of breaking my crystal ball (a cheap paperweight sitting on my desk that looked like a crystal ball that had been dropped from a great height.) At least his was easier to track down than the phone message I got that said, "When is my dictation going to be ready?" That was it - no name, no department, nothing.