Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Employment Statistics (Establishment Survey).'
The source code is: CEU9091912001
US. Bureau of Labor Statistics, All Employees: Government: U.S. Postal Service [CEU9091912001], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CEU9091912001, September 25, 2016.