When you update your voicemail or turn on your email client’s out-of-office greeting, there are three basic things you must share in your message: When you’re leaving, when you plan on responding to your messages upon returning, and who they can contact if they need to talk to someone right away.
The appropriate tone depends on the holiday. If you’re closing for Christmas or New Year’s, it’s safe to assume your customers expect you to be festive and maybe even humorous. Conversely, if you’re closed for Veterans’ day, your email should strike a more serious chord. Use our templates and double-check your tone before you hit send.

I think that it depends on whether or not that OoO was going to people in the company, who new your personsality and would appreciate the humour/personal touches, or to everyone, always. If I got the from OoO from a quirky co-worker, fine. It I got it from an outside contact that I have had little contact with? Unprofessional and a bit off-putting.
Happy holidays! [Your Name] Whether you prefer to stick with something simple or have a little fun with your holiday out-of-office message, it’s important that you always make sure to at least include the basics: your return date and an alternative contact people can reach out to …