my whole elementary school class visited my dad’s workplace once, cos it was cool. it had a huge anechoic chamber.
and the cantine had canada dry.
Didn’t have a dedicated day for it but I used to hang out around the office my mother worked at if dad was on late shift.
I was put “in charge” of the printer and paper shredder.
I ended up actually working at that company in my early 20s after my mother had already left. The Boss and I.T. guy who still worked there joked about my “previous experience at the job”.
They threw me in the computer lab and I just played addictinggames.com until it was time to go home.
Prepared me more for office work than I thought.
My dad was an editor for the WSJ and I used to go in during the summer and download pirated music using their ultra fast T1 connection (1.5Mbps)
My mother used to work a state govt job. I don’t think she ever had a “take your kid to work” day, but there were a few times when she brought me into the office for the day. She was the manager of an entire wing of her building, so she could just bring me in anytime and no one said anything about it.
Her coworkers were always so nice and had apparently heard all about me because they all seemed to know me intimately. I sometimes wondered if her coworkers were only nice to me because I was the boss’s kid. But my mom was a genuinely nice person who was always looking out for others, so I wouldn’t be surprised if her coworkers actually liked her.
Sometimes I’d get tours of various offices, sometimes my mom would just set me up with something to do to entertain myself. I drew a lot in my childhood, and my mother would always put up my artwork in her office to show off to her coworkers.
My dad ran his own business and as long as I could remember, it was just him and his secretary renting out a large office space in the cities. He had a partner originally, but his partner died really young, so my dad was left with the whole company to run himself. Fortunately, my mom’s govt job paid the bills, so my dad didn’t need to make a ton of money with his small business.
Every time I went to my dad’s office, he would set me up at a computer near his secretary and I would spend the day either playing Wolfenstein 3D or Pac-Man. This was back in the early '90s, so you had to boot these games from a command line. The computers themselves were Windows 3.11 or so.
EDIT: I never had kids of my own, and I retired young, so I won’t ever get to experience taking my kids to work.