If you were the casino manager would you fire the casino worker for interfering with your business or would you ban the gambler from visiting the casino?
I'd just leave him alone and do his thing even though it looks bad to stop customers from playing at their casino it's also for the better since the worker is only concerned for his uncle.
Strange that he always lose. Never seen such a guy that has a terrible luck.
It's somewhat normal for gamblers to have bad luck but there could be a couple of factors that make him lose most of the time. I've seen a similar user with bad luck and in his case, he lacks self-control as he doesn't stop until he reaches a certain amount or recovers his previous losses.