: Total federal tax deducted from paychecks.
: The unique ID for the individual worker.
The 2012 Form W-2, Wage and Tax Statement, follows a standardized text structure for identifying information, income boxes, and statutory codes. For that tax year, the Social Security wage base was capped at . Identifying Information (Boxes a–f)
Page 4. a Employee's social security number. OMB No. 1545-0008. b Employer identification number (EIN) c Employer's name, address, IRS (.gov)
: The worker's legal name.