What type of complaint does not require a written statement?

An informal complaint typically does not require a written statement. This type of complaint is often made verbally and can be addressed in a more casual or less structured setting. Informal complaints are usually directed to a supervisor or manager and can be resolved through discussion rather than through official processes.

In contrast, formal complaints usually need to be documented in writing to ensure that there is a clear record of the issue and the steps taken to address it. Anonymous complaints may also be less structured but often involve a level of concern that warrants official handling, which could necessitate a written statement to facilitate follow-up. Official complaints, as the name implies, also require documentation to ensure adherence to protocols and policies in addressing the complaint. Therefore, the informal nature of informal complaints allows for more flexibility in how they are communicated and resolved.