Called back to fix charting

Our pharmacy reviews our medication charting and if they note that something was signed out of the Pixys System and then wasn't charted correctly they make a report to our supervisor. The supervisor then calls everyone on the list and asks them to correct the mistake so that billing can be done correctly. Usually it isn't a case of not charting a medication at all, it usually is that something was charted as a home med when it was actually our supply or vise versa ....or that the number of mL or tabs was accidentally recorded incorrectly. We usually fix the errors the next time we work as most of us work 3 days a week. I should note that I am going to be out of town for these next few days and that I live an hour away from my hospital so driving down there on my day off to fix something that takes about 5 minutes to do when I will be there in a few days anyways seems a bit impractical.

1) Can the supervisor demand that we come in to fix an error prior to the next scheduled shift given that the next shift scheduled isn't for a couple of days?

2) Do they have to pay me for the time? I am not on call, am an hourly employee, and do not carry a company phone. The drive to work is about an hour.

3) Does anyone else have a similar situation?

Thanks everyone!