What term describes the situation when clients are assigned to another worker within the same agency?

The term that best describes the situation when clients are assigned to another worker within the same agency is "transfer." This term is used in social work and related fields to indicate that responsibility for a client's case is being shifted from one worker to another within the same organizational structure. Transfers may occur for various reasons, such as staffing changes, workload balancing, or when a worker's area of expertise may better serve the client's needs.

In contrast, "referral" usually implies directing a client to different services or organizations outside of the current agency, which does not fit the scenario described. "Reassignment" can be a synonym for transfer but is often used in contexts where roles or tasks are being redistributed within a team or organization rather than specifically involving client cases. "Delegation," on the other hand, refers to the process of assigning responsibility for a task to another person while maintaining overall accountability, which does not pertain specifically to the context of clients being assigned to different workers.

Thus, "transfer" is the most precise term for this situation in the context of social work practice.