I know people that have used the benefit system here in the U.K. to pioneer and when someone questioned an elder about that he said it was okay as long as they were also looking for work (they weren’t)
I also know of brothers who did work for people, refused payment or charged very little because they didn’t want their benefits affected, the customer would then feel bad and give them money or extra money which the brother would now see as a ‘gift’ and hence no need to declare it for tax. It was quite a scam but they always got away with it.