Why did the elves implement an "open door" policy at Santa's workshop?

They wanted to encourage more elf-expression.

Why did the Christmas tree go to the party dressed up?

Because it wanted to branch out and meet new people.

What do you call a snowman who's a great listener?

Chill

Why did Santa's elves start a union at the North Pole?

Because they wanted to Claus for better working conditions