If you have reached your maximum retirement age (which is between 65 and 67) then your earnings will not penalize your social security at all. You can read up on the details at the Social Security Administration's website at http://www.ssa.gov/retire2/whileworking.htm.For more information about your social security benefits, look into the NewRetirement Social Security Optimization articles, found here: https://www.newretirement.com/Services/Social-Security-Benefits.aspx