Haha, probably not for every meal, but they actually do eat there quite frequently. One of my sister's best friends works at corporate in Oak Brook, and will be transitioning to the West Loop once the new HQ is complete. They eat for free at any company owned store (and possibly franchised locations also, but not 100% sure on that) in the US, whether they are on the clock or not.
My sister constantly brings me coupons given to her for free extra value meals good at any US location. Their food may suck, but free is a great price
Their breakfast options aren't too shabby either.