The higher the physical stress on the job, the greater the rate of MSD's.
Most people face their greatest exposure to physical stress at work.
Interventions that reduce physical stress on the job reduce the risk of injury. I read 600 studies published by the National Institute for Occupational Safety and Health. Then I had to read 27 peer reviews to make sure they were telling the truth. There were over 1,400 studied filed by the Occupational Safety and Health Administration. You will have to forgive me, I did not read all of them.