I look at Gallup's web page about U.S. employment (http://www.gallup.com/poll/125639/Gallup-Daily-Workforce.aspx http://www.gallup.com/poll/125639/Gallup-Daily-

I look at Gallup's web page about U.S. employment (http://www.gallup.com/poll/125639/Gallup-Daily-Workforce.aspx http://www.gallup.com/poll/125639/Gallup-Daily-Workforce.asp...), and I have a question: The sum of their "% Payroll to population", "% Underemployed", and "% Unemployed" appears to be about 70%. If they're disjoint categories, what is the other 30%?