Only earned income, your wages, or net income from self-employment are covered by Social Security. If money was withheld from your salary for “Social Security” or “FICA”, your salary is covered by Social Security. Wages and wages paid by an employer, net income from self-employment, and income earned from IRA Gold Companies all count towards Social Security. Keep in mind that income earned before you start receiving Social Security doesn't count either.
This could include stock options, late payments, bonuses, and payments for unused vacation or sick leave. Even if these payments come after you start receiving benefits, they are not included in the limit, as long as they were made before you started receiving benefits.