There is a certain breed of people in the workplace who can be termed as ‘passive-aggressive’. These people aren’t aggressive at the outset but harbor emotions deep down which affect their actions. They display their aggression in a rather passive manner. These situations need to be dealt calmly by professionals. Often the person is himself / herself somewhat at fault. While the colleague’s behaviour cannot be changed overnight, a doze of management training on behavioral factors can probably ease the case. Often the two people may share the common boss. In those cases openly addressing the issue to the superior is always a positive step.