danger money 
(North American danger pay)
noun [mass noun]
Extra payment for working under dangerous conditions.It is perfectly legal to offer inducements (higher salary, etc) to workers in exchange for them giving up certain right (which is why people who handle hazardous waste get paid danger money to do so)....
- He is pleading for another chance and wants to head abroad to a place where he can get an exceptionally high wage, but only because the money is danger money.
- Safety is also paramount in an industry where relatively high wages (a basic pay of 80,000 for a rig manager) clearly include danger money.