I had previously asked about listing references with which you've lost contact. Now I'm in a slightly different situation. I've run across a couple online forms which require that I enter my supervisor's name and phone number for each job that I held. While it's generally easy to think up what my last supervisor's name was, I'm not quite sure what to enter.
As for the supervisor's name, I've been assuming it should be the last supervisor I had. At my first job, I worked in the same department for the entire two and a half years and had four different supervisors -- one for about a year and a half, one for a few weeks, and the other two for about half a year. It makes more sense that the one which knew me the longest would be able to give more detail about the kind of worker I was. Since there's only one space to put a supervisor, which one would a hiring manager care more about?
Considering this job was a while ago, I'm not even sure if these people work there anymore, and certainly have lost contact with them. So for the supervisor's phone number, I have two scenarios:
If you do know their phone number, should you give it out? From my previous question, I know that unexpected calls can sometimes be odd. It seems like this would fall under the same issue. Should I be contacting them to confirm, "hey I'm listing you as my supervisor for this job"?
If you don't know their phone number, how do you indicate that? Type in a bunch of 0's and just tell them "I don't know their number" if they ask (which is what I've been doing)? Use the company's phone number, even though it's already listed above with the company's information?