My client has a depression. Maybe you also have someone like that in your team or in your workplace. This are the people who will not take on any challenges, will not be happy from a public presentation, will not raise their hands up for a new project.
You might think of them as lazy, not motivated and lacking initiative. But this is what is happening inside of them:
their every day is like a fight for keeping their heads above the water, the water of saddness, grief, powerlessness, helplessness,
small things, like coming to work on a bike or shopping, are already big challenges,
their nervous system is so vulnerable that sees many things as threaths.
You might say they should take the month off and recover. Maybe. But at the same time, small successes build up their self-esteem, and contact with people enables them to forget for a while about how helpless they feel.
So, if you have a depressed employee:
give small tasks with a limited responsibility
broaden the range of tasks slowly and gently
show that you care.
I know a couple of depressed people, who overcame their depression thanks to medication and work. They were not left behind, nobody fired them, they still felt needed despite their condition. Let us create such safe environment in competitive world for depressed employees.