Hotel rooms have become more extravagant over the oas decade and the time needed to clean a room has increased. eHow says that housekeepers generally have to clean 15 to 20 rooms per day: occupied rooms should take about 15 mins to complete, while a room cleaned at check-out should take no more than 30 mins. A good housekeeper should be able to make a bed in about one minute.

According to a study, housekeepers have the most dangerous jobs at hotels and have an injury rate of more than one in ten workers - almost twice that of other hotel employees. At one pricey hotel chain, it was estimated that a housekeeper who cleaned 15 rooms stripped approximately 500 pounds of soiled linens and replaced those with 500 pounds of clean leins. Resulting in back and shoulder injuries, carpal tunnel syndrome, and bursitis.

a. Why is it necessary for hotels to establish a standard for number of rooms to be cleaned by housekeepers?