I don't know how common this is - but I recently discovered my company 100% matches donations to a wide variety of charitable organizations up to X dollar amount every year, as part of our normal benefits package.
I've worked at this company for several years....no one has ever mentioned this, I don't recall ever reading about it in any onboarding literature, and I'm not sure how common it is for companies to offer this sort of benefit.
No one at all ever mentioned this - I just discovered it on accident while browsing some internal company websites. I feel extremely silly not realizing this benefit exists.
If you donate regularly to different causes, you may want to consider checking to see if your company 100% matches donations first before donating to the same organization directly and missing out on the donation match.