1-  The thing that demotivates Harper the most is that her new boss does not take time to make her feel valuable at work she is also not asked how she is feeling about her workload, she doesn’t feel appreciated by her new boss.

2- If I was a HR manager I would advise David to give Harper a thank you and let her know how much I appreciate after she completes a task so she feels valued, additionally David could allow Harper to attend workshops to enhance her professional development.

3- The disadvantage of Harper leaving the company is that they will lose employee motivation and productivity, Harper’s withdrawal is also a major loss for the company because it will need them to hire and train a replacement worker which will cost much higher than Harper’s pay itself.