I don't think they are public record. My accounts do not show up in my credit record - so it probably can't be pulled that way either. However, if your employer requires you to disclose it, and you do not, and they find out, you will be fired for sure. Depending on how pissed your employer is, you might even be liable in a court of law, should the employer decides to pursue it. Only you can figure out if the risk is worth it.
And you are a fool if you think my answers are definitive (this is just my best guess), so don't.