Which of the following is NOT a type of discipline that can be applied in the workplace?

Promotion is not a type of discipline that can be applied in the workplace. In a disciplinary context, actions are generally intended to correct behavior or enforce compliance with policy, rules, or conduct expectations. Options such as written reprimands, suspensions, and demotions are all corrective measures that are applied when an employee fails to meet established standards or engages in misconduct.

A promotion, on the other hand, represents an acknowledgment of exemplary performance or potential and serves to reward employees for their contributions and advancements within the organization. It is fundamentally aimed at encouraging positive behavior and growth rather than addressing problems or correcting undesirable actions. Thus, it does not fit within the framework of disciplinary measures.