[mistyislands]

On theory it makes sense. Any large organization experience bloat and there are lots of white collar employees who do nothing while collecting a salary. Regularly trimming the fat is good.

In practice however, attrition goals are terrible. It destroys team cohesion, encourages people to sabotage eachother and incentivizes sociopathic tendencies. If you know the lowest performers will get kicked out, then you have every incentive not to help those around you.

Typically the people who get pushed out are not the lowest performers, but rather those who have pushovers as managers. A vicious manager can fight and defend his reports. The weak ones end up sending someone to the "least effective" bucket, about half of which get fired in the next few months.