I don’t believe they do and here is why

If you are currently old enough to draw ss, but not yet 67 you are limited to just under $16,000 that you can work and earn before you have to return $1 for every $2 you earn over that limit. However, you can draw retirement funds and it not count. Since most early government/military retirees do go back to work in the civilian population. Not to mention ss hates to let go of money if they don’t have to. I am by no means an expert on this, this is merely my opinion.