When is a rumor, not a rumor

I had an interesting experience on Friday, dealing with gossip, a rumor. There is a rumor that I am leaving my current place of employment. I have had the office staff ask me, and also the associate ask me if I am leaving. It sounds like my last day is on Tuesday. 

I am trying to work this out, what may have caused someone to think that I was leaving so soon, and why?

I am not leaving, not yet anyway :)