In 1877, Massachusetts passed the Nation's first factory inspection law. It required guarding of belts, shafts, and gears, protection on elevators, and adequate fire exits. Its passage prompted a flurry of State factory acts.
These muscles can cause pain in the right upper back after injuries, such as a muscle strain or bruise from a car accident or fall. Overuse from work or recreational activities, such as painting or playing racket sports, might also be to blame -- especially for people who are right handed.
Pain on the right side of the chest is unlikely to be related to heart disease in women. Conditions which can affect this side include: Gallstones Gallstones are the most common cause of severe and constant pain on the right side. Muscle Strain Muscle pain can occur due to overexertion or lifting a heavy object.