Scrooge complains that it is not "convenient" or "fair" for him to be expected to give his employee a day off for the holiday of Christmas. Scrooge claims that the clerk, Bob Cratchit, would certainly think himself "ill-used" if Scrooge refused to pay him for the day. When Bob points out that it really is just the one day a year, Scrooge declares that this is "a poor excuse for picking a man's pocket every twenty-fifth of December!" Scrooge doesn't even pay Bob enough money for the poor man to have a coat; he only has a very long scarf in which he wraps himself when he goes outside. And yet, Scrooge feels himself to be victimized by Bob and everyone else that expects a paid day off for the holiday.
Scrooge thinks that Christmas is a frivolous and ridiculous holiday when people who have no money spend it anyway. He says that, even though all people do is get older and poorer every year, they still continue to celebrate. The whole holiday is complete inexplicable to Scrooge, and so it baffles and angers him that he should be expected, as an employer, to give his employee paid time off. He feels that it is like a legalized kind of robbery, as though he is being exploited, simply because it is Christmas. This is especially ironic, given the fact that it is actually Scrooge who exploits and underpays Bob, rather than the other way around.