"Workers may take higher-level jobs at a younger age than we have traditionally seen," Mr. Burtless said.

According to a recent study by the school, 53 percent of foreign-born students said they had a higher-level job in their native countries.

A few higher-level jobs went to American men, but women, no matter what their qualifications or length of service, languished in clerical positions.

For higher-level jobs, there are always fewer positions due to the pyramid structure within all companies.

There are 4.5% people either in higher-level jobs or middle level Industries.

"Here they tend to have higher-level jobs and they are probably more financially stable."

We will see automation replacing higher- and higher-level jobs.

The shortage of higher-level jobs has forced many young people to take roles for which they are overqualified.

"When smaller companies in particular hire temporaries, some of them are really auditioning candidates for a higher-level job," he said.

The company says employees with English skills work more efficiently and provide a pool of candidates for higher-level jobs.