I'm in agreement that another coworker may have wanted the OP to be excluded for some reason. Who could possibly think it is ok to invite the entire company, but exclude one person? This sums up why I have not said much of anything to coworkers/GCW. I wondered if there was some offensive thing about me that made it a problem to invite me. Maybe it is best to wait until after the party to ask/discuss it & really that is my preference - as there would be no way that I'd go now anyways.
Something smells really bad here.
I HIGHLY doubt there is something offensive about you. You seem like a very thoughtful person. I was thinking more along the lines of someone is jealous of or threatened by you.
I don't disagree with some of the posters above who suggest it could merely have been coworkers being clueless. But I have seen situations were someone has been excluded from a group activity because one person in the group disliked or was jealous of them.
I highly doubt there is anything offensive either. Especially given how thoughtful the OP seems. I think some people don't like quiet, thoughtful people who just want to do their job, though, and they just like to stir up trouble for someone like that.
It could be clueless co-workers, but it just seems so weird to me that every other co-worker is invited to this, really big, party. The usual reasons really don't cover it for me. And I'm really struggling to think about in what context it was appropriate to have a conversation and decide that OP, and only OP, should be excluded. That's kind of going out of the way to maybe not attack, but at least snub, OP.
People can be much more immature and childish than we think, sometimes.