Which of the following is NOT a valid purpose for extending working hours?

The choice that identifies a purpose that is not valid for extending working hours is the notion of punishing in groups. Extending working hours should be guided by objectives that enhance productivity, support project completion, and enable effective workload management.

Increasing productivity through additional working hours can lead to improved output, while accommodating project deadlines allows teams to meet essential timelines for project milestones. Managing workloads effectively ensures that tasks are balanced and that workforce stress is minimized. In contrast, using extended working hours as a form of punishment undermines morale, creates a negative work environment, and may lead to decreased productivity rather than enhancing it. Therefore, the correct choice underscores the importance of maintaining a positive and productive workplace culture while recognizing that extending hours should serve constructive purposes.