People would still produce.
Yes, you will have those who want to enjoy free everything without contributing. Imagine though how bored they'll be after a little while. Simple curiosity will engage people and encourage learning, doing. This is also why the free access also has a small price, work for a minimum number of hours each week in your locality. Once you meet those volunteer hours all your basic needs are given freely.
Here is the thing though, you're free to choose what you volunteer doing during any of those hours. Let's say you volunteered 15 hours to help bake bread for part of your 30 hours, then you decide to go help build a school for another 15 hours. There are no bosses, only a community council. These are the village elders appointed every two weeks if folks like. They simply plan work, point volunteers to the bulletin board with jobs to do. You might get a job ticket and return it once you meet the hours needed for it. Or we could do it on honor based.
Yes, everyone has free access to everything. You will have some that take advantage. The community or locality can then decide to not contract with those taking advantage, and tell neighboring locals "Timmy Smith, he's a bum that does not honor the basic contract". Then, other locals can choose doing contract with them or not. Eventually the idea gets to be clear, you pitch in a little to have free access, or get no access.
As it is volunteer there's no need for harassment at work. There's no need to do pointless work either. People will do what is needed only. Imagine all the office jobs gone because people abide by the common contract and own no property, ergo need no wills, no finance advice, no insurance, no lawyers to file malpractice. people would do and quality of work would improve too. People want to help people and that's been proven scientifically, helping people makes people happy. Doing your best also makes you happy.
Also like I said sheer boredom will give cause to get motivated to do, to create, produce or offer service. It is not as insane as you may think. Yes, it's free access to everything only with a voluntary stipulation. Pitch in, have free access to all you need. If you have wants, you do extra to attain those. You barter surplus goods or services to suffice your wants. All your needs are met by you pitching in around your village/town. You helped build a few houses for community use, a house for traveler use, then you had help and got your own house built. And it is your house as long as you choose using it.