Glenn states that the six finalists for the Santa position (cut down to five after Glenn receives a text message) are the applicants who passed "the Megan's Law search." Megan's Law is a federal law requiring the sex offenders register with the government and that registers of sex offenders be made public.
Steve Agee's first appearance as Isaac. Though he is a temp worker who quits at the end of this episode, he must have been hired back, and as a permanent employee, as he recurs throughout the rest of the series.
The name on Amy's name tag is "Joanne" in this episode.
David Ferguson makes his first appearance as Eugene. Though he is a temp worker here, the character must have been hired on permanently, as he recurs through season 5.
At the end of every episode, the card for the production company Spitzer Holding Company features a variety of items they specialize in. In this episode they list Venom Extraction, Dairy, and Good at Math.