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.
However, trying to find the causes of upper right side back pain can be difficult at best and annoying, too. Truthfully, there are two causes for upper back pain accidents and muscle problems that cause posture issues. Both will cause pain for you, and the problems that go along with each of them are not fun, either.