They plot, scheme and yell abuse, draining your energy and making any Monday morning particularly blue.
Office bullies, sadly, are as much a part of the workplace as paper cuts, dysfunctional printers and bad coffee.
The Workplace Bullying Institute in the U.S. found that, 67 percent of office bullies are men. But, according to the research, 33 percent of bullies who are female, tend to choose other women as their targets.