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"I've stayed in a purely technical role without management responsibilities," says Lemmon. He adds that he would have chosen to explore other business roles if he were able to maintain traditional working hours.

As a result of his delayed sleep hours, Lemmon says that he has taken fewer risks and switched jobs less often. Why? "If an organization is treating me well, I stay put," he says. "Fortunately, in my 17-year career, spanning four organizations and at least 10 managers, I've had only one manager who wasn't willing to accommodate me at all, and I had to quit. In engineering, managers tend to be tolerant of all kinds of eccentricities, but in addition to that, I suspect that I've been pretty lucky."