A study of energy-efficient motor systems in China noted that the purchasers of electric motors within a company are generally not the end-users (Yang 2007). Often, people without the knowledge, information and incentives to minimize operating costs are responsible for procuring equipment, and energy management staff might not have the time to check their decisions. Maintenance staff, too, might have incentives unrelated to running costs, including energy consumption, focusing instead on minimizing capital costs or repairing failed equipment. Efficiency experts suggested that the company also link its personnel policy (promotions, salaries) to energy conservation.