Women bully other women in the workplace.

From ABC News:

It's a war being fought across the country in all types of workplaces. An estimated 54 million people say they have been bullied at work, according to a 2007 survey by Zogby International.

While men tend to target male and female employees equally, women bosses are likely to aim their hostility toward other women more than 70 percent of the time, according to a survey by the Workplace Bullying Institute.

Workplace experts have different theories on why women more often target other women. Some say these women see female co-workers as possible competition for only a few top-level positions.

Namie said it's more important to get help, not try to analyze the tormenter's motives. The institute says more than 80 percent of those bullied lose their jobs, and 41 percent suffer clinical depression.