Jan. 18, 2013 at 12:57 PM ET
Video: For those who thought there was a glitch on your first 2013 paychecks, the culprit is the reinstatement of the Social Security payroll tax to its full 6.2 percent from the 4.2 percent American workers have been paying for two years. CNBC’s Sharon Epperson explains what this means for your paycheck.