Actually, the amount of work required to, e.g. remove waste/provide drinking water & food and provide access to essential services & information is greater in the "less urban, less concrete, less centralized" environment. Someone still has to do this work.
Not to mention that by losing the convenience of highly urbanized environment you force the more productive members of society to waste considerably more time on the things they are un-productive in (e.g. driving 2 hours to a doctor instead of taking a 15-minute detour on the way from work).
Even allowing that it is, the distinction to my mind is that the work is distributed amongst many (in the case of a less urban environment), and the imperative / compensation balance is tilted in that environment more towards the individual, as they have a greater interest in maintaining water and food supplies, handling waste etc.
To suggest that one of the advantages of work is that you can visit a doctor on your way to work ... well, I'm not sure if you're being funny with that one.
A less centralised or urban society doesn't necessarily mean that you're further away from someone with medical skill. You may acquire more skills yourself, people with those skills may also be keen to escape the centre of cities, technologies may provide a mechanism for you to obtain mostly remote access to the relevant knowledge and skills, etc.
Plenty of non-urban citizens of western countries have sufficient and satisfactory access to doctors, for example.
Aside, and I realise this sounds snarky but the intent is not -- would you mind defining (or at least providing some examples of) the 'more productive members of society' in your assertion there? I'm guessing you don't mean the health professionals that they are consulting.
Not to mention that by losing the convenience of highly urbanized environment you force the more productive members of society to waste considerably more time on the things they are un-productive in (e.g. driving 2 hours to a doctor instead of taking a 15-minute detour on the way from work).