Columbia subject headings:
Employees--Recruiting--United States.
Employees--United States--Recruiting.
Hard-core unemployed--United States.
Industries--Social aspects--United States.
Unemployed--United States.
Harvard subject headings:
Employees--Recruiting--United States.
Hard-core unemployed--United States.
Industries--Social aspects--United States
Princeton subject headings:
Employees--Recruiting--United States.
Hard-core unemployed--United States.
Industries--Social aspects--United States.