Fitting tools and equipment to the user is the main tenet of ergonomics. For janitors, ergonomic fit is key to productivity as well as prevention of strain and injuries. Repetitive motion paired with heavy equipment — as is common for those doing vacuuming, for example, or pushing a large janitorial cart — can lead to strain injuries on joints and muscles. Janitors are at high risk for Repetitive Strain Injuries, or RSI, which apply to a number of upper limb disorders.

Ways to reduce that risk include providing the proper tools and equipment for janitors; modern janitorial carts are light-weight and more compact, and have quality wheels and castors that help them glide along hard floors and carpeting to minimize user strain. Ergonomic handles and ergonomically designed cart components also help workers be more productive while preventing injury.