Is underemployment the same as disguised employment?

Underemployment is often strongly associated with disguised employment because the employee is technically actively working and hired by a company.

However, there are quite different. For instance, a person with a law degree accepting a full-time clerk position in a legal firm handling mainly administrative duties is classified as underemployed.

Apparently, this person is actively receiving an active income but is working below their skill levels. 

Similarly, part-time workers may be classified as underemployed if they intend to become full-time workers; they are capable and willing to perform full-time instead of part-time work.

On the contrary, learn more about disguised employment.