I manage a staff member who I recently discovered has a significant MH problem. He came to us as wanted a less stressful role with less responsibility, and has proved to be an excellent worker, keen to learn new skills, and hard working. He did not disclose his problems to me, although occupational health were fully aware. In the year he has been with us, he has had 2 days off sick, well below the average. However, last week he had an episode of severe anxiety, wanting to die, and clearly in a very distressed state. he went home, and I didn't expect him to return the following day. However, he did, and explained about his condition to me, saying he did not want to be off sick as had previously been off for a year, and felt his progress with his illness was so good, he felt that he did not need to be off. Since this episode, he is back to his normal reliable hard working self. Some of the staff are unsure how to approach him, they are constantly asking him if he is ok, but he says that he just wants to be treated as if this episode hadn't happened. As a boss, how can I best offer support.