Tell me about a time an employee made a significant mistake. What action did you take?

This is one of the frequently asked behavioral or situational interview questions for a supervisor position. Here the hiring manager is expecting you to provide a real-time example where you have successfully managed the difficult employee.

Your actions may include:

• Discuss with the employee to understand the root cause of the mistake.
• Figure out the action items to ensure this will not happen in the future.
• Ask the employee to make this mistake as a learning opportunity that helps in their future performances