Who is Fezziwig?
In Stave Two, Ebenezer, led by the Ghost of Christmas Past, revisits scenes from his youth. One of those scenes features Fezziwig, Scrooge's former boss and the man for whom he served as apprentice. It is clear that Fezziwig was a good businessman, as Scrooge has learned a great deal, and as Fezziwig's business seems to be thriving.
Yet, it is clear that Fezziwig takes a different approach to his work. Rather than acting miserly and holding on to his money, Fezziwig is generous and kind to his workers. On the Christmas Eve in question, Scrooge witnesses as Fezziwig throws a party for his workers and apprentices. Scrooge reflects on how Fezziwig spent his own money to throw the party, and he likewise reflects on his comparatively poor treatment of Bob Cratchit, his own employee.