Which of the following is NOT a reason why shift work has become more prevalent in the workplace during the past two decades?

A) the demand for 24-hour consumer services
B) just-in-time delivery practices in manufacturing
C) the globalization of business
D) the desire by workers to maintain "real" wages
E) the desire of workers to earn higher pay

While maintaining "real" wages may be a reason why workers choose to work shift work, it is not a reason why shift work has become more prevalent in the workplace during the past two decades. The main reasons for the increase in shift work include the demand for 24-hour consumer services, just-in-time delivery practices in manufacturing, and the globalization of business. The desire of workers to earn higher pay may also contribute to the prevalence of shift work.