Eh, my team’s instruction to put them up if they’re going to be away from email/voicemail for more than an hour (standard lunch break). I have a ton of staff, and we’re in a business where a high degree of responsiveness, especially during the business day, is expected and few of my staff have mobile email. We’re also a larger organization with mixed project teams, and not everyone knows who’s PT/FT or on nonstandard hours.
I was recently on the receiving end of a very perplexing out of office message. It simply said, “I am currently out of the office.” No indication of when they would be back or who to contact in the meantime. Fortunately in my case this was someone I cc’ed on an email as an FYI and did not need any response from, but still–who does that? IMO a good out of office message says how long you’re out and who to contact in the interim if things can’t wait, no more and no less.

Same. I’ve been out of the office for over a year and did not change my voicemail message on my desk phone, nor have I checked it in that year. To be very honest, I didn’t usually check it even when I was in the office.
An Out of office Message is the autoresponder feature within your email settings that allows you to automatically send a response when an email is sent to a specific email address. Typically, businesses will use the autoresponder feature to confirm receipt of an email and to acknowledge and thank customers for an order that may have been placed.