It is settled that it is a tort in a three-party situation, that is, where A threatens B that if he does not do something to C, A will do something unlawful to B.
Thus, any court action is by C, who is injured against A who used B to injure him.
"Threat of harm generally involves a perception of injury...physical or mental damage..or instance of injury, or a material and detriment or loss to a person." Threatening behaviors may be conceptualized as a maladaptive outgrowth of normal competitive urge for interrelational dominance generally seen in animals.
When employees feel offended or intimidated at work, their performance is likely to suffer; in extreme cases, they may quit or make legal claims against the company.
A hostile environment leads to less engaged employees and a tense atmosphere of anger and resentment.
To bully is to intimidate through blustering, domineering, or threatening behavior: workers who were bullied into accepting a poor contract.
Intimidation (also called cowing) is intentional behavior that "would cause a person of ordinary sensibilities" fear of injury or harm.
It is not necessary to prove that the behavior was so violent as to cause terror or that the victim was actually frightened.