Mental health is a sensitive topic and needs to be handled appropriately.
Education and communication are key. You can offer training materials to all employees, as well as a specific training for managers, to learn about mental health and how to identify the signs of a struggling co-worker. It’s important to learn how to do this from a professional as this is a delicate topic. Be sincere in your communication and show genuine desire to help employees and offer a safe space for them to speak up. Additionally, make sure you have a defined process in place for how to address the needs of a struggling employee when situations arise.