there are some groups of people that are unworkable
bed-ridden disabled people.. the mentally deprived.
there are also some social restraints. such as having criminal record. or no fixed address or being an illegal immigrant
In my country the mentally deprived or criminal people are still being included in society, it might not be real work. But there institutions which are doing daily tasks and building small things like baskets that are being sold to friends and family. It is good to include them in the workforce, so they feel needed. For people in their bed it might be much more difficult to do something, the only solution probably would be do something online. A bigger factors are the people who just don't want to work, they prefer to get a check from the government and stay at home watching TV or drink alcohol.
I see the mentally deprived people do not want to get begging from other people because they think they can still do some work. Although they can not work like normal people, we need to give them the spirit not to feel alone and not used by society. But if people in their bed, they really can not do anything except accepting help from other people. I think those people are too lazy to work because they only want to get a fast result, attracting the percentage of the criminal increase.