Seatbelts save lives, but sometimes they can also cause pain too. During a road traffic accident they can cause severe chest, shoulder and rib compression and lead to extensive bone bruising, and sometimes even fracture of the breast bone and ribs.
Repetitive regular driving can also bring in its own set of problems. The seatbelt can pull against the shoulder and cause muscle aching and fatigue. It sometimes can rub the tip of the shoulder causing pain. In people with shoulder impingement syndrome, this can be rather painful.
Another tip for you: if you have shoulder surgery, avoid driving for at least two weeks as the position of the arm on the steering wheel can put a lot of tension through the shoulder.
Please always wear a seatbelt, and make sure your passengers do the same.