Christopher Anvil's "The Troublemaker" (short story, free): How a bad mole corrodes a team's morale

There are really two things here:

1. A portrait of a team, or rather, how it is poisoned by a corrosive new member. Think Ellsworth Monkton Toohey from Ayn Rand's Fountainhead.
2. Empathy implants - implants mandated for entire ruling elite of a world that force the rulers to empathize with the population & its troubles.

In the story, the later holds the solution to the problem of the former.

Fact sheet.

First published: Astounding, July 1960.
Download full text from Baen CD.
Rating: B. 
Among the stories from Astounding/Analog issues edited by John Campebell.
Related: Stories of Christopher Anvil.