there are arguments for/against. it's nice that a work event during normal work hours doesn't cut into my free time, but it does cut into the block of time that I've already set aside to, you know, get my actual work done. I generally don't attend optional events scheduled during work hours unless I think attending will directly contribute to the work I am responsible for. "virtual happy hour" doesn't meet that criteria. on the other hand, I might hang out in a zoom call after hours if I don't have evening plans already.