What decision did Mr. Lapham make that Johnny felt he had to work on Sunday? From chapters 1-2

Johnny is in a hurry to perfect the handle before Monday, when it is due to Mr. Hancock. But when he gets back to the shop, there is no charcoal. Dove is purposely unhelpful. When he finally brings Johnny some charcoal, it is not good enough to use and the boys quarrel. Mr. Lapham notices and lectures Johnny again about his pride. He explains that it’s not Dove’s fault that he’s stupid. He also declares that no one in the house will work for the rest of the day.