Insurance Underwriter here, 24 years.
When I first started in the home office it was a suit every day. At some point is was business casual Fridays. Which then became business casual everyday. The it was simply casual Fridays. I’ve worked remote now since 2007 from my home (which, LOL, is shorts and T-shit) but have routine trips back to the home office for meetings, clients, just some face time. It’s pretty much jeans and a nice shirt now. Amazing the dress code change in 20-some years.
I recall my first office job in the early 80’s. The guys all wore suits and ties, typically black or blue suits with white or light blue shirts and red or blue ties and us gals wore dresses or skirts below the knee with button down blouses and blazers and panty hose and high heeled shoes - no pants allowed for us women.
The thing was that my job at the time was completely back office, I never saw or interacted with clients or the public. I remember trying to kneel down to pull the bottom drawer of a file cabinet open to do filing and how uncomfortable and impractical that was in a dress or skirt and blazer and hose and high heels. And God forbid you got a run in your hose.
I remember the first thing I did in those days when I got home was to take off those uncomfortable clothes, especially the panty hose and get into jeans and a tee shirt.
The last several office jobs I’ve had were casual dress, several allowing jeans or kakis and polo shirts and such. I like this much better. I find I’m more productive when I’m comfortable, when my feet aren’t aching from wearing heels and my panty hose aren’t chafing or my toes not peeking through them.