That's not my department (TNMMD)

"That's not my department" (TNMMD) is a phrase often used in workplaces to indicate that a particular issue or task falls outside an individual's responsibility or expertise. It suggests a division of labor where employees focus on specific roles rather than handling tasks outside their assigned duties. While it can help maintain clear boundaries, overusing this phrase may hinder collaboration and problem-solving, as it can convey a lack of willingness to assist or engage with colleagues facing challenges. Balancing personal responsibilities with teamwork is crucial for a productive work environment.