When you work as an employee, your wages are generally covered by Social Security and Medicare.
Your employer gives Social Security a copy of your W-2 form to report your earnings when they give you a copy of the form for filing your income tax return.
We use these employer reports to record earnings. Because of the millions of wage reports we must record, your earnings for last year may not show up on your record until late in the current year.
If you worked for more than one employer during the year, your earnings from each employer are added to your record when we process that employer's report.