Moral hazard

Moral hazard is a term used in economics. Nobel laureate Paul Krugman explains moral hazard as "any situation in which one person makes the decision about how much risk to take, while someone else bears the cost if things go badly."
In other words, a "moral hazard" is a situation where the possible costs of a risky action are not borne by the one taking the risk. 
"Moral hazard" is a kind of reverse incentive (perverse incentive). 
History.
The term "moral hazard" was first used in the 17th century. The "moral" in "moral hazard" was understood to mean "subjective". It was not used in a way that has anything to do with ethics.
In the 1960s, economists used the term to describe inefficiencies that occur because of information asymmetry. In economics, "moral hazard" as a special kind of market failure.