When we have company offsite events, I'm usually wearing my gear all day, since I may not have a good place to leave my Roadcrafter.
My BMW Rallye 2 Pro pants have great armor, though they probably don't have the greatest abrasion protection. They're easy to live in (I hike and even climb in them when I ride to those activities). They aren't the only motorcycle pants I've used for work stuff, but it's my goto these days.
You can probably find a balance of comfort, protection and style that works for you.
If you want to be higher on the safety side, you might look at Aerostich pants or look for gear with an EN13595 or EN17092 approval. Good luck finding more than jeans approved to one of those standards in local shops, though other stuff can be ordered (mostly from overseas). Jeans may give the style you want, but not the best for cold wind and rain.
As far as boots, I'd rather switch into shoes at work, but at offsite events I'll be in my EN13634 Icon Patrol 2 boots all day. Plenty comfortable, breathable enough, and they meet an objective motorcycle boot safety standard.