I thought JW's , if they even have an account (most do) were supposed to be extra careful about who they friended on Facebook. I'm suprised they would friend a non Witness they just met. Maybe they are the "fringe" type who sorta' do what they want.
As easy and tempting as it would be, I wouldn't mess with them in case it could backfire on you at work. (and because it just wouldn't be nice)
It would be kinda fun to say "This company has been in business since 1975 which as you may have heard was evidently a time when certain groups were expecting the world to end. Thankfully that never happened and we now have 144,000 publishers...I mean employees and have branch offices 108 lands and islands of the sea. Please turn with me to page 607 in your instruction manual. Thats page 607....