(b) Does mandating the device cause the firm's labor demand curve to shift, or will the firm be moving along its demand curve? Shift Move along Graphically, label and illustrate what would happen with the labor demand curve: (c) Think about the four factors that affect labor demand discussed in Chapter 4 (the Hicks-Marshall laws). Which of those factors is most relevant to the question above? (d) Thinking about your answer to (c) above, what circumstances would be worst for workers in the lawnmower industry