Good afternoon Julie,
I'm Doug, and I'm sorry to hear of the confusion. My goal is to provide you with excellent service today.
Social Security uses only the top 35 years of your earnings to determine your benefit amount. So, if you don't have 35 years of earning history and you continue to work after you start your social security benefits, then each additional year up to 35 will result in an increase in your benefits.
Likewise, if you already have 35 years of employment, but last year was one of the top 35, then that top 35 year would take the place of a lesser income year and would also result in an increase in your benefit amount.
Only if your earnings could not be placed in the top 35 years of income would your continued employment not have any effect on your continuing benefits.
Keep in mind that for example, if you earned a top 35 year of income in 2015, social security will not see that income until you file taxes in 2016 and then they will apply your increase in January of 2017----so the increase you receive is not immediate---but actually 2 years after you have the top 35 year.
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I wish you and yours the best in 2016,