You own a small business and supervise 4 employees - all of whom have been working together for 10+ years. While each employee has their own defined roles and responsibilities, all of your employees constantly interact with each other on a personal and professional level given the company's small size. Team chemistry is extremely important to you, and that has always been a strength of your employees. However, you've noticed that one of your employees has been "off" recently. They do not seem to be acting like themselves, and their mood is bringing everyone else on the team down and affecting overall performance