According to one of my favourite magazines for entrepreneurs, PROFIT (OCT’07), 72% of salespeople are either actively seeking or would be open to a new job if they came across one.
The question is why?

Well, from a communication coaching perspective, I would advise managers out there to keep up the kudos and also the “kaizen” for their high-fliers.

It is not enough to just tell them “good job” and then go and spend your efforts helping other less successful employees. Driven salespeople see themselves as self-employed, and will take care of their own self if you do not provide structured feedback, ways to continuously improve (kaizen), and ‘breathing room’ too. A stagnant feeling is an invitation to talk to a recruiter or headhunter.
So have a proper meeting with the successful ‘Super-Sales-Rep’. Ask them what they think of their performance, their personal and professional goals re: company, and yes, areas to work on to be even more successful. in short – talk to them, listen, and provide good feedback and new goals.  It is rare high fliers are in it solely for the money.