Which of the following is NOT a type of warning in a progressive disciplinary approach?

In a progressive disciplinary approach, various types of warnings are employed to inform employees about performance or behavioral issues and provide them with the opportunity to improve. The typical stages include verbal warnings, written warnings, and final warnings, leading potentially to termination if necessary.

A financial penalty, however, is not a traditional form of warning within this framework. The purpose of progressive discipline is to facilitate improvement through incremental steps of warnings rather than imposing penalties that have a financial impact. Therefore, option C accurately identifies something that does not fit into the conventional categories of warnings utilized to encourage employee correction and development.