Source: US. Bureau of Labor Statistics
Release: Employment Situation
The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU02026635
US. Bureau of Labor Statistics, Multiple Jobholders, Hours Vary on Primary or Secondary Job, Men [LNU02026635], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/LNU02026635, December 9, 2016.