If a worker rejoins a legal employer, under which condition will the original worker number be reused?

The correct understanding is that the original worker number will be reused when the worker has the same work relationship type and legal employer. In Oracle HCM Cloud, a worker number is a unique identifier assigned to an employee during their employment with an organization. If a worker leaves and then returns to the same legal employer under the exact same work relationship type, it indicates that their employment situation in terms of their role and employer's organizational structure hasn't fundamentally changed. This situation allows the system to reassign the original worker number because it logically aligns with previous records for that worker, maintaining continuity in employment history.

The reuse of the worker number simplifies data management and provides a clear historical context for the employee's tenure, benefits, and accumulated metrics with the organization. Reapplying for the same position or having a role change does not, by themselves, trigger the reuse of the original worker number, as those scenarios could involve changes in employment status or structure necessitating a new identifier.