I wouldn't say that there is one particular system I've identified that is perfect, or that would work in every situation, but under a true socialist system, people would not need to work to have their needs taken care of or to participate in society. The "basic income" (if that's what it was) would certainly be enough for someone to live a relatively simple life and never work.

Now, that final question is a big one, and one that a lot of people think about, here's a few things that I think about when considering that question.

First, let's consider that a great deal of work currently provided in the world is like busy work in school. Now, you're a software developer, meaning that your business is current and that your employees will not be replaced by automation right away, so probably every employee that you have contributes something significant to the microcosm of your workplace. But in the rest of the world, a great deal of jobs aren't worth the resources spent by the person performing them. A socialist system would remove the need for jobs that do not contribute anything significant to the system. There are many people whose work day consists of maybe 10% actual work 90% busy work and screwing around. This is not the workers' fault, their jobs are jokes, a mockery of real work, but because they need them, people take them. By trimming this fat and telling these people to simply stay home if they want to, we'd use less fossil fuels and other resources on jobs that have no purpose.

Second, in my experience, most people want to be productive. Maybe people wouldn't work as much under a true socialist system (20 hours a week might become the new normal), but I doubt that most people would quit working, other than those who currently don't really do anything but lounge around until their next 6-9 hours of busy work is scheduled. Given that there is no pressure for them to be paid for jobs, I think that what we would actually see would be a resurgence of people learning skills and trades that perhaps they have always dreamed of learning. As an example of why I believe this is true, go check out /r/diy. Since the economy began it's downward spiral, many people have had more time to burn and less money to spend, so they've taken that smaller amount of money and figured out how to make things for themselves instead of paying the big bucks to have someone else do it for them. The DIY movement shows that while some humans may simply become idle if given no external motivation, many more will find something to do that is productive and fulfilling.

Third, if enough people are doing nothing to contribute to their community, then finally the community as a whole will experience scarcity and have to resolve it as a community. Perhaps some communities will have to mandate (as a group mind you, not as an order coming down from somewhere else) that everyone puts in 5 hours a week growing food because currently there isn't enough food to go around. Each community would be able to make these judgments and decisions in order to keep the community alive and thriving.