Answer:John is an: Underemployment
Step-by-step explanation:
When an employee is hired into a job that will not require the use of all their skills and education.
Underemployment is categorised into:
Visible underemployment
Visible underemployment are the employees who work for lesser hours in their respective field. Although they may want to work fully time but they don't find the full time job so they end up taking part time jobs just to survive
Invisible underemployment
Under this underemployment people are employed into full time jobs but still these jobs don't require the use of their skills. John is under this underemployment because he is frustrated that his new job doesn't take advantage of his skills.