Use the W-3C form to correct information filed on the original W-3 form. Forms have no perforations and are preprinted with red ink. File the W-3C with the W-2C sent to the SSA. Order the quantity equal to the number of employers for which you need to file corrected returns.

You fill in the date for the appropriate year. If W-2 forms had not been filed incorrectly, a correction form is not necessary.