There used to be supported work placements for people with disabilities of all kinds - mental and physical. A great deal of that support has been withdrawn, as with many positive and preventive schemes.
I used to work for the Shaw Trust, who put into practice a government scheme to subsidise employers for employing disabled people. I believe it still exists, but I am not sure how it is funded now. I was employed to go around to the work places to talk to both employer and employee to make sure the placement was working well.
Many sick people are in a panic about the rules as regards benefits for those too unwell to work, especially those with mental health problems, as this is poorly understood. Their vulnerability to such stringent rules is huge - there will be suicides I doubt not.
I spent years working on the DSS to change the rules about what was then DLA, as people with head injuries who had subtle and not obvious disabilities were being denied benefit. They could not work because of problems such as memory, sequencing (e.g. putting your pants on before your trousers), concentration etc. - all things that made them unemployable. They did in the end change the rules - but it is these sorts of people with hidden disabilities who will find themselves in trouble.
If work is good for us, then we need to find ways of supporting and subsidising work for those who are sick and disabled.