FICA taxes for Non-resident spouse treated as resident
I'm a resident alien for tax purposes. My wife was on F-1 till June 2006, then OPT till Nov 2006, and H-1 afterwards. We elected to treat her as a resident for tax purposes when filing returns for 2004 and 2005.
My question is :
Her employer did not withhold FICA taxes until she received her H-1B approval in Nov 2006, presumably because she was F-1 OPT.
But since we file joint returns, I'm guessing that FICA taxes should've been withheld even when she was in F-1 OPT status. How do we go about correcting this ? Is this the employer's responsibility, and will we owe any penalties for underpayment as a result?
Any advice is greatly appreciated.
Thank you for your time,
thound