The law says, as far as I can determine, that everyone is supposed to wear seatbelts.
It further says (in defiance of common sense) that I'm responsible as driver for children under 14 wearing the belts.
Now, adult passengers can be prosecuted for not wearing the belt and can be fined.
However, children 14 and over are responsible for wearing belts, not the driver. But, and this is the actual question... If they're caught not wearing belts, who pays the fine, if any?