Sorry, not sure what you mean here? Some wealthy people work so that they can make more money, or because they enjoy the work they do, or for the benefit of others. But when you have wealth you have choice. There's obviously a big difference between choosing whether to work or not, and there being no meaningful work for you to do.
Even in a post-scarcity society you will still need vets, doctors, hairdressers, insurance clerks, maintenance workers, farmers, police, firemen etc etc. Given the choice, if there was no incentive to get up for work in a morning, the likelihood is that most people would stay in bed.