[hirundo]

My small employer has made no mention of the subject, and since my coworkers are ideologically diverse it would cause conflict if they did.

I think it's worth stating pronouns if a significant fraction of the people you work with have nontraditional ones. If it's just a tiny fraction, or none, it isn't worth the trouble. Like, if you're the only kosher person in a workplace it shouldn't make it necessary to partition food according to kosher law in the office kitchen, but it may be if the majority are keeping kosher.

A "significant fraction" is of course in the eye of the beholder. But maybe we can agree that it's somewhere between 1% and 50%.