Dear Liz: I’m a certified nurse midwife who is salaried. When we are fully staffed, I work 55 hours a week on average. If we cover extra shifts, we are paid a lump sum rather than hourly. (If we were paid hourly, it would work out to far less than minimum wage.) We are paid twice a month, but my pay stub shows that I only work 70 hours per pay period. I work almost that many hours in a single week! When I work extra shifts, it is reported on my check under “miscellaneous” with the lump sum listed. I asked our administrators about this and they just told me it wasn’t a big deal, but I’m not convinced that’s true. Do the hours reported on my paycheck affect my Social Security income later? I just don’t want to lose out on Social Security benefits when I work my butt off!

Answer: The hours you work don’t affect your future Social Security benefit, but your earnings do. At least they should. Your employer is supposed to report your full salary to Social Security, and to deduct the appropriate amount of Social Security tax from your paychecks. If your pay is underreported, your future benefits could be shortchanged.

Here’s a quick way to check if your earnings are being reported properly. On your paycheck, there should be a line that says either “Social Security,” “OASDI” or “FICA.” If the line says Social Security or FICA, the amount listed should be 6.2% of the money you earned for the pay period, up to a maximum annual amount of $8,239.80 for 2019. (There’s a ceiling on the amount of wages subject to Social Security taxes, which this year is $132,900.)

Some employers don’t break out Social Security taxes from Medicare taxes, and include them both in a line for FICA, which stands for Federal Insurance Contributions Act. The FICA amount should be your Social Security tax (6.2% of your earnings up to $132,900) plus 1.45% for Medicare. (There’s no cap, so all earnings are subject to the Medicare tax.)

If the tax amounts shown don’t include that “miscellaneous” lump sum, please call the IRS at 1-800-829-1040 to report the situation.