There and back again: Returning to a former company can be lucrative -- and a little awkward

Aaron Chester claims his former co-workers weren't too happy to see him when he returned to his old department at a large university in Florida. "I worked in admissions for a couple of years but left for a new job with a high school district," says Chester, 38. "I left on good terms but you'd have never thought that when I came back. People were just -- I don't know how else to say it -- not nice to me."

Chester, who says the time between his two stints spanned 18 months, admits he was hurt at first but says he got over the perceived cold shoulder within two weeks. "I left as a co-worker and came back as their boss," he says. "I'd be a little upset, too."

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