Originally posted by Mr. Hightower FTW:
I wonder, if I switched jobs mid-year, how does the second employer know when I have reached my taxable limit? Hmmm... 
They won't know unless you tell them and even then, their payroll system may not be able to handle the adjustment. I had this problem when I switched jobs back in 2002. If you have too much withheld via SS, you'll get it back when you file your tax return for the year in question.
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