On the one hand, we have a lot of people in this country who are lonely, unemployed, want to spend their time in a useful way, or simply want to do something for others directly, not just by donating. On the other hand, we have overworked, overheated, underpaid workers in old people's homes, kindergartens, hospitals, youth centres, etc. Why not introduce regulated and systematised voluntary work, which would relieve the burden on full-time employees, help cover absences on holidays and public holidays, and relieve loneliness and make many people's days more meaningful?
The system could work something like this: you sign up for a specific type of work (e.g. in a retirement home), go through a short induction (this is where the state should step in and organise coordinated inductions in local communities), pay a nominal induction fee and get a "volunteer badge" which obliges you to do xy hours of volunteering per year. If you don't, you lose the badge and have to go through induction again. Perhaps one of the volunteers could then find a regular job in one of these institutions, get some experience, etc.
For example, I have a (normally) well-paid job behind a computer and I miss working with people. At the moment I have young children and no free time, but when they are grown up I would be happy to spend a certain number of hours each week volunteering, rather than sitting in front of the TV. I don't need the extra money, I love my job, but sometimes I miss the contact with people and the feeling that I have done something good for someone. Of course, we can always volunteer in this way, without systematisation, but I still think that such a system would be welcome, it would make it easier to find both the volunteers and the institutions that need such help, and by introducing it, we would somehow weed out people who might not be suitable for this kind of work.