Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Employment Statistics (Establishment Survey).'
The source code is: CES6056140001
US. Bureau of Labor Statistics, All Employees: Professional and Business Services: Business Support Services [CES6056140001], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CES6056140001, December 5, 2016.