Over the course of two years, PayScale collected data from nearly one million US workers and found that, overall, 46% of survey respondents consider themselves underemployed.
Of these respondents, 76% say they are not using their education or training, while 24% say they are working only part-time but would rather work full-time.
PayScale also sorted and ranked its data by the job titles most relatively common among underemployed workers compared to all U.S. workers.
For example, the relative commonness for a technical support representative job title among the underemployed is 1.69, meaning it is 1.69 times more likely for an underemployed worker to have a technical support representative job title than the average US Worker.
You can check out the full list at PayScale, or scroll on for 28 of the most common jobs among underemployed people:
Find out how your salary stacks up on PayScale.