Moonlighting refers to a situation in which a worker takes two jobs. Typically, the first job is full-time whereas the second one is part-time and often conducted at night or over the weekend. With the help of indifference curve diagrams, answer the following questions.

(a) How can you use the labor supply model to explain why a worker would moonlight?

(b) Let w1 and w2 be the wage rates of the first and second jobs, respectively. Can your model deal with all three possibilities: (i) w1 = w2 ,w1 < w2 , and w1 > w2 ? Explain.