The propensity for the economy to wipe out solid middle-skill, middle-class jobs, and then to replace them with a combination of low-wage service jobs and high-skill, professional jobs that are generally unattainable for most of the workforce, has been dubbed “job market polarization.” Occupational polarization has resulted in an hourglass-shaped job market where workers who are unable to land one of the desirable jobs at the top end up at the bottom.
