It's holiday season for people in the retail, public service etc. sectors too.
It's just the busy time of the year for them.
Well
A busy time of the year, along with Easter, Halloween and all the other 'holidays' that are more work load for no additional pay in many cases as working holidays gets more and more normalised and employers feel it's now expected as standard.
Anyone on these forums wants to give this Christmas, at the very least avoid retail shopping over Christmas and make quite a few peoples end of year when they're already feeling smegty for not being able to spend it with family.