With the recent focus on robots and worker safety, it may be surprising to learn that the National Institute for Occupational Safety and Health (NIOSH) first addressed this issue 34 years ago. In 1984, the agency released safety recommendations for working with robots after an experienced operator of an automated die-cast system died when he became pinned between the back end of an industrial robot and a steel safety pole.
Here is that accident report and the recommendations that followed: