Elf on the shelf typically returns on December 1st. The elf is a special holiday tradition that helps encourage children to be on their best behavior before Christmas. The elf is known for his mischievous nature, and children enjoy waking up each morning to see what new mischief the elf has gotten into overnight. The elf's job is to report back to Santa about each child's behavior, and then Santa decides whether they have been good enough to receive presents on Christmas day.