Punitive action might be described as:

Punitive action typically refers to measures taken as a consequence of behavior that violates policies or regulations, often intended to serve as a form of punishment. In the context of the choices provided, suspension without pay fits this definition most appropriately. This action directly penalizes the individual by removing their income for a specific period due to their misconduct, which aligns with the concept of punitive measures aimed at discouraging future violations.

While termination could also be seen as punitive, it is generally considered a more final action, potentially leaving no room for the individual to amend their behavior within the organization. Request for retraining and a warning, on the other hand, are corrective actions rather than punitive; they focus on improving behavior rather than imposing a punishment.