Almost every office has an employee who's tough to work with, says Jody Foster, psychiatrist and co-author of "The Schmuck in My Office: How to Deal Effectively With Difficult People at Work."
These people, she says, are generally defined as "schmucks."
"A schmuck is however we idiosyncratically define a schmuck to be," Foster tells CNBC Make It. "Someone who causes distress among people."
It's important to understand the different type of schmucks one may encounter in the workplace because they negatively affect their co-workers and the success of a business, says Foster.
Here are the top three most common "schmucks" you may meet at work: