I remember a few years ago a visiting speaker mentioning in his Public Talk that he was still working as a window cleaner even though he was in his mid seventies. He said he wished Armageddon would come soon as that would be the only way he could retire due to the high cost of living here in SE England.
Judging by what window cleaners here charge they probably earn plenty but it's also a case of saving and financial planning for old age. That's the old age that so many never expected to reach!
George