I felt a bit uneasy with that as well. Does this sort of behaviour encourage gambling-like activities? Is an adult raised with the gambling reward more likely to walk into a casino and risk his family's nest egg? Though, in the best case, the child grows up learning how to identify positive habits and trick himself into doing them (e.g. with the fishbowl of rewards).

Also, your comment on how these jobs should be "just expected" reminds me of sports contracts. A stand-up comedian (I can't remember) said that contracts had cash bonuses if the player did not commit any crimes (e.g. illegal drugs). I guess sometimes, federal prosecution is not a strong enough motivator.