appreciation

Florentino is in his mid-forties, and has worked for a fortune 500 company for the last ten years. For the first six, he worked hard and stayed late. However after several small events that caused him to question his role in the organization, he was passed over for a promotion. No one acknowledged his work, or talked with him about his progress. While he continued to do the minimum necessary for his job, by all measures, Florentino was disengaged and unhappy. How did he change that?