Discuss How can a leader or manager help the individual who lacks motivation or does not know what (s)he wants? What might research say about this matter?

Assignment:

Employees are motivated by different means. However some employees, despite motivational opportunities, simply lack motivation. How can a leader or manager help the individual who lacks motivation or does not know what (s)he wants? What might research say about this matter? Please provide support for your answer rather than just your opinion.