Medication errors occur when when of these things occurs during drug administration:
Now I'm unclear as to if you'd recapped the needle or not. If you were you may be written up for that, and you should regardless of if you were injured or not. Still, that's not a medication error by any stretch of the imagination. Protocols are in place for a reason and there is no reason to ever recap a used needle. As I interpret it though you were throwing away the needle and the cap when you accidentally got stuck. If that's the case your shift supervisor is an idiot and suggesting that people get written up for an accidental on the job injury is asinine. These things happen, and you cannot realistically remove all risk from this job. Her type of attitude only serves to not have staff report these types of injuries, and if a lawsuit comes down from an employee who gets sick because they feared that they would be fired if they reported this type of injury your facility will be paying through the nose in court. I PROMISE you, odds are that anyone who has been a nurse for any length of time HAS been stuck. I stuck myself once several years ago... it sucks, got checked and moved on. If you get written up for it, file the incident away as a thing to be careful about. I would also seriously consider moving to another floor/hospital as this type of attitude is dangerous.