I’m 66. My plan is to file for SS Retirement and continue working. Currently, a garnishment is in place that takes 25% of my work income. Will my SS Retirement also be garnished and for how much? Proactively, what can I do?

Gary,  I am sorry you are facing this.  Administrative wage garnishment is one thing, and that sounds like what’s happening with your earnings.  More on that here: https://www.myeddebt.com/borrower/wageGarnishmentNavigate

As for social security, that would come under another government collection power and be considered a “federal benefits offset”.  No more than 15% of your total benefit can be offset and the government cannot take any amounts you get below $9,000/year or $750/month.  See more about your rights from the ever wonderful National Consumer Law Center and its studentloanborrowerassistance.org website here: http://www.studentloanborrowerassistance.org/collections/government-collection-tools/benefits-offsets/