National Ugly Sweater Day
Friday, December 18, 2026
Third Friday of December. A beloved holiday tradition for office parties!
Background
National Ugly Christmas Sweater Day lands on the third Friday in December. 'Ugly sweater' parties surged in popularity in the 2000s and are now a staple of office holiday celebrations.
How to celebrate at work
- Host an optional ugly-sweater day with a small prize for the best one.
- Tie it to a charity drive — a donation as the 'entry fee.'
- Snap a team photo for the company newsletter or socials.
#holiday#sweater#morale
Add to your calendar
Reviewed Saturday, June 13, 2026. Dates can change and exceptions apply — confirm with the official source. Not legal advice.