M0nica
Katie59 Was it drugs in the 1950s-60s? It certainly is neither alcohol nor drugs for my friend.
Many people in the unemployable group have undiagnosed autism and other similar problems, especially the older ones. This is why they do not turn up for work on time and cannot follow instructions and the same with stacking shelves.
You need some experience of those in this group. Some can progress with enough support and training, but that isn't there.
I know somebody like that too MOnica. He's had goodness knows how many jobs, including voluntary ones, but he just can't keep a job. His problem isn't so much following instructions, but interacting with people. He can't do a customer facing role because he doesn't know how to deal with people and says tactless things and/or seems rude. He can't get on with colleagues, who are often lacking empathy and make fun of him for being a bit "odd" and he reacts inappropriately if a boss criticises his work. It would be possible for him to work (and work well), but any employer would need the patience of a saint and I'm afraid most don't. We really need somewhere like the old Remploy factories.