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.
Appendicitis. In fact, this is the most common cause for pain in the right side of abdomen, it is caused due to inflammation of the appendix. It usually starts around the navel moving towards the lower right side of abdomen. The severity can vary from dull to severe pain.