Being a boss involves many roles but none more important than overseeing the company’s talent. While some behaviors and actions by your team may come as a surprise, there should be others that you are prepared for and know how to handle like negativity, lack of productivity, and arguing.

Business Insider recently asked a group of leaders across industries their impressions about what shouldn’t surprise them or other bosses like them. John Rampton, Co-Founder and CEO of Calendar, was one of the thought leaders asked to share his insights.

He noted that all good managers need to know when to fire an employee: “It’s a necessity if you want to have a thriving business,” says John Rampton. He also added some specific reasons: “When employees are gone more often than not, are argumentative, or customers despise them, these are signs your workers have overstayed their welcome.”

To read the entire article and find out other things that should never surprise a boss, click here.