Ficus

[Your Name]

I had a beautiful ficus tree at work.  It was doing fine and when I
returned from vacation it began to die back slowly, one branch at a time,
starting from the bottom and working its way to the top of the plant.  The
leaves began by turning yellow, then brown, and finally falling. I asked a
coworker to water when I was away.  Could my suspicion be right that it was
overwatered, or could there be another cause for its demise?