- A person or entity who isn't the plaintiff, but their knowledge or information about a situation is used to initiate legal action. The authority to start this legal process is formally given to someone else
- A private individual who starts a lawsuit under qui tam provisions, which allow this person to sue on behalf of the government
- A party who has the right to request a legal intervention, like a writ of mandamus. The state, acting as the plaintiff, petitions for this intervention on their behalf
- The relator provided the information that led to the fraud lawsuit, even though they were not the direct victim of the fraud.
- A relator can initiate a lawsuit under the False Claims Act, thereby helping to expose fraudulent activities against the government.
- In certain situations, the state can file a writ of mandamus at the request of a relator.