In the 1930s, the u.s. department of labor created the as a vehicle for the new public employment system link the demand for skills and the supply of skills in the u.s. workforce.

Dictionary of Occupational Titles (DOT).

Explanation:

As the exercise details, the DOT was a creation of the Department of Labor which meant to use it as a vehicle for helping the new public employment system link the demand for skills and the supply of skills in the U.S workforce. It helped define many different types of work. It's still available nowadays, even though it was developed from 1938 until the late 1990s.