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.
Poor posture-Apart from poor posture, lack of proper diet, lack of exercise and injury can also cause right side pain in the body. People who work in hard labor or participate in contact sports may experience injury or sprain in the right side of the body, in the front or/and the back side.