Under what circumstance is teaching outside the department authorized during work hours?

The correct choice is centered on the concept of taking personal leave or unpaid leave to engage in teaching outside the department during work hours. This approach is significant as it allows an employee to pursue teaching activities without conflicting with their regular duties or responsibilities in the department.

Using personal leave or unpaid leave ensures that the individual is not being compensated by the department for the time away and recognizes that their obligations to their primary job are paramount. This is a common policy in many organizations where employees seek opportunities for professional development or side engagements that could enhance their skills but do not interfere with their assigned roles.

Choosing this route respects the structure of the organization and maintains operational integrity, as employees are formally separating themselves from their department duties for the duration of their teaching engagement.