Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU02032200
US. Bureau of Labor Statistics, Total at Work in Nonagricultural Industries, Worked 1 to 34 Hours, for Noneconomic Reasons, Usually Work Part Time [LNU02032200], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/LNU02032200, July 28, 2016.