National Payroll Week recognizes all of the hard work by America’s 156 million wage earners and the payroll service companies who pay them. Together, through the payroll withholding system, they contribute, collect, report and deposit approximately $1.7 trillion, or 71.9%, of the annual revenue of the U.S. Treasury. Think about that for a minute, $1.7 trillion on an annual basis. It’s what keeps the US government alive.