"In the novel, the decision to work overtime leads to her downfall: She becomes addicted to work, ends up in the hospital and loses a new beau, who has a decidedly more relaxed attitude toward his own job. But on the TV show, which began airing in April, Ms. Higashiyama is destined for a happier fate, said the producers"

They're subverting the novel and using it as a tool to support the obsession with putting in more hours, not avoid it, apparently.