We have some field staff who have out of office replies set up for when they do fieldwork. On one hand it’s nice I guess, but on the other hand, they aren’t dealing with urgent matters only they can handle (they don’t manage projects or deal with clients), so it seems a bit unnecessary? No one has been disciplined for not responding to an email the same day. But maybe I’m just a crabby Gen-Xer, and a client can stand to wait a few hours or until the next day to get an answer from me.
Huh. This is a rare column from you that I disagree with almost entirely. I guess to start with what I think you get right, there's no need to apologize for being out of office, and no one should feel obligated to deal with anything other than a legitimate emergency (which are, in most fields, truly rare) while on vacation or while taking time off.

This is what I’ve seen most often in my career. Problem is, the contact is almost always the admin. I’m the admin. Everyone’s idea of assistance is different. Often, I didn’t have the knowledge about the issue in order to be of any assistance. I wound up spending more time running around looking for answers than actually working on what was on my own plate. It’s exhausting. Otherwise known as “please don’t call us for unicorn problems when we handle llamas. Literally, we can’t do anything for unicorn problems.”
In an instant, you feel a weight lifted from your shoulders, and a choir of angels sing Paul Kelly’s How to Make Gravy around you as you skip out of the office. You gaze upon the masses of workers on the tram, smugly wondering if their out-of-office responses are on yet.