Jan Levinson (formerly Jan Levinson-Gould) is played by Melora Hardin. She became known as Michael Scott's superior at the New York City corporate headquarters of Dunder Mifflin, a paper company.
At the onset, Jan is presented as a no-nonsense manager and strong female role model, but she eventually devolves into a total mess, getting divorced, then fired, then - after beginning an on-again, off-again romance with Michael - letting her half-crazy, awkward, neurotic side come through in a big way. What will Jan do next?
Jan: All right, well are you gonna take care of this?
Jan: What did I tell you about "yeppers?"
Michael: I don't... remember.
Jan: I told you not to say it. Do you remember that?
Jan: Don't panic.
Michael: Uh, This is excellent. Although alarm bells are kind of going "Ringy Dingy Dingy!"