Definition - What does Zero Tolerance mean?
Zero tolerance is a policy of not tolerating undesirable behavior regardless of the circumstances. The policy of zero tolerance is implemented by applying applicable laws and penalties to even a minor infraction of a stated rule with the intention of reinforcing its importance and deterring individuals from engaging in such conduct.
Justipedia explains Zero Tolerance
The term zero tolerance came into existence in the United States in the 1980s when President Ronald Regan’s administration launched its war on drugs. The term basically means not tolerating illegal conduct under any circumstances. In the context of law, zero tolerance is rarely mentioned. However, it is widely used to refer to the strictness of laws applicable to certain kinds of undesirable behavior. In the United States, zero tolerance is commonly associated with two specific areas: driving under the influence (DUI) and the policies applied in schools regarding drugs, weapons, etc.