Roughly 15 years ago an ergonomics professor from Ohio State University patented a device that, when worn by a worker, measures the twists, turns, exertions and other factors that lead to back and shoulder injuries. According to Philadelphia Inquirer reports, the device was tested for a year on Terry Smith, a longtime housekeeper who regularly lifts heavy mattresses, thick comforters, bed linens, pillows, robes, bath sheets, etc. an estimated eight times in each room.

According to the findings from these tests, "a hotel housekeeper, who changes sheets and wipes down showers in an air-conditioned, carpeted hotel room, is as much at risk for a back injury as a construction worker, who lifts boards and hauls concrete."

Since these findings, hotel managers and workers unions have been conducting their own tests and found that changes need to be made. The hospitality workers union, Unite Here, has really been working to negotiate changes to help the workers. Some of those changes include reducing the number of rooms housekeepers clean in a day or providing more ergonomic products to help make specific tasks easier.

Click here to read more about what is being done to accommodate these cleaners.