I don't see anything fundamentally wrong with a tag to indicate that a question is asking how to deal with situations in the workplace involving coworkers (or other things) the asker finds annoying.
It can be considered similar (but not synonymous) to distractions.
I wouldn't say it should apply to annoying situations (as in it's annoying that I don't have documentation of this work I did), but rather annoying things (as in this person is annoying). Of course how annoying something is is entirely subjective, but that's irrelevant - the fact that the asker finds it annoying is sufficient to justify the question about it.
This seems like a good (or not terrible) use of the tag: How to handle a coworker's breath odor?
This seems like a bad use of the tag: Too many Charitable causes in the workplace
This is perhaps somewhat of a borderline case, tending towards getting rid of the tag (since it's more about the situation of the coworker continuing the explanation being annoying than the coworker itself being annoying, although that's a confusing line): How to politely tell someone to stop explaining?
Conclusion: Seems like a valid tag in theory. While it currently has a sum total of 0 appropriate uses on open questions, I don't see a pressing need to get rid of it - we may as well leave it around for future questions or find a few appropriate questions to apply it to.