Committee : Housekeeper worked for 3 months after employment document expired . Geithner failed to pay self-employment taxes while working for IMF , committee says . Comment: Tax issue a `` common mistake , '' incoming White House spokesman says .
Committee : Housekeeper worked for 3 months after employment document expired . Geithner failed to pay self-employment taxes while working for IMF , committee says . Errors were `` honest mistakes , '' do n't rise to `` level of disqualification , '' chairman says . Tax issue a `` common mistake , '' incoming White House spokesman says .